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Best Practices to Prevent COVID-19 Illness in Staff and People With Serious Mental Illness and Developmental Disabilities in Congregate Living Settings

Best Practices to Prevent COVID-19 Illness in Staff and People With Serious Mental Illness and Developmental Disabilities in Congregate Living Settings

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04726371
Enrollment
415
Registered
2021-01-27
Start date
2020-11-01
Completion date
2022-11-30
Last updated
2025-02-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Axis I Diagnosis, Coronavirus, Covid19, Developmental Disability, Intellectual Disability, Mental Illness

Keywords

COVID-19, Coronavirus, Intellectual Disabilities, Developmental Disabilities, Serious Mental Illness, Congregate Living, Group Homes

Brief summary

Best Practices to Prevent COVID-19 Illness in Staff and People With Serious Mental Illness and Developmental Disabilities in Congregate Living Settings is a research study aimed at developing, implementing, and evaluating a package of interventions specifically designed to reduce COVID-19 and other infectious-disease incidence, hospitalizations, and mortality among staff and adults with Serious Mental Illness and Intellectual and Developmental Disabilities in congregate-living settings.

Detailed description

Persons with Serious Mental Illness (SMI) and Intellectual Disabilities and Developmental Disabilities (ID/DD) are disproportionately vulnerable to COVID-19 for three reasons: (1) Medical vulnerability. Smoking, chronic obstructive pulmonary disease, cardiovascular disease, and diabetes all increase COVID-19 mortality and are about 2-3 times more prevalent among persons with SMI. People with ID/DD suffer higher rates of COVID-19 risk factors, including pre-existing chronic conditions, heart defects, obesity, chronic respiratory problems or lung disease, lower immune function, cancer, and diabetes. (2) Residential vulnerability. The congregate care settings in which many people with SMI and ID/DD live carry many of the same higher risks of COVID-19 transmission currently affecting assisted-living settings and nursing homes across the nation. (3) Health behavior vulnerability. Some people with SMI and ID/DD have cognitive, behavioral, and physical challenges that heighten COVID-19 risk by hampering personal protective practices (PPP) (i.e., hand hygiene, physical distancing, use of face masks). Moreover, the staff who work in congregate care settings are often subject to high rates of exposure, have low socioeconomic status, use public transportation, and lack personal protective equipment. This collection of factors contributes to an extraordinarily high risk of COVID-19 morbidity, and mortality. Despite payment reforms and mandated best practices for COVID-19 for congregate care by the MA Department of Public Health, rates of coronavirus illness for residents with SMI and ID/DD are 8 times higher (12%), and for staff 2 times higher (3.0%), compared to the general population in the surrounding hot spot communities (1.5%) selected for this study. This tragic health disparity confirms that key decision-makers lack the knowledge of how to optimally tailor best practices for this highly vulnerable population and the staff who provide their care to effectively reduce their high risk of COVID-19 and COVID-19 related mortality. The investigators' overall goal is to reduce COVID-19 and other infectious-disease incidence, hospitalizations, and mortality among staff and adults with Serious Mental Illness (SMI) and Intellectual and Developmental Disabilities (ID/DD) in congregate-living settings in Massachusetts. The investigators address 2 comparative-effectiveness questions: With the goal of prioritizing and resourcing actionable best practices: What is the comparative effectiveness of different types and intensities of five basic preventive interventions-screening, isolation, contact tracing, personal protective practices (PPP) (i.e., hand hygiene, physical distancing, use of face masks), and vaccination-in reducing rates of COVID-19, hospitalizations, and mortality in staff and adult residents with SMI and ID/DD in congregate care settings? Effectiveness Hypothesis: Of the 5 preventive interventions, tailored screening, effective use of isolation, and increased vaccination acceptance will be associated with the greatest reduction of staff and resident COVID-19 rates and related hospitalizations. With the goal of effectively implementing best practices: What is the most effective implementation strategy to reduce rates of COVID-19 in congregate care settings for persons with SMI and ID/DD: (1) Tailored Best Practices (TBP) specifically adapted for staff and residents with SMI and ID/DD in congregate living settings or (2) Generic Best-Practices (GBP) consisting of state and federal standard guidelines for all congregate care settings? Implementation Hypothesis: TBP will be associated with greater implementation fidelity and lower staff and resident rates of COVID-19 and hospitalization than GBP. To test these hypotheses, the investigators will pursue three Aims: Aim 1: The investigators will synthesize existing data collected by the six provider organizations on (1) rates of COVID-19, hospitalization, and mortality and (2) use of screening, isolation, contact tracing, PPP, and vaccination in 400 group homes for SMI and ID/DD. The investigators will also collect qualitative data through surveys and virtual focus groups on the experience of staff and residents, and on barriers and facilitators to implementing recommended practices. Aim 2: The investigators will determine the comparative effectiveness of different COVID-19 preventive practices (screening, isolation, contact tracing, use of PPP, vaccination) by populating a validated simulation model and engage decision makers and stakeholders in selecting priorities for best practices. The investigators will apply the Clinical and Economic Analysis of COVID-19 Interventions (CEACOV), a COVID-19 simulation model that has already been developed and validated, to simulate the 2,050 residents and 3,300 staff of the 400 group homes for persons with SMI and ID/DD in the study. The investigators will compare the effectiveness of different types, intensities, and combinations of the five identified interventions: screening, isolation, contact tracing, PPP, and vaccination. On completion of the simulation modeling at month 3, the investigators will convene a COVID-19 Quality Improvement Collaborative (CQIC) Virtual Summit including consumers, providers, advocates, and key decision makers, during which the investigators will summarize the results of the comparative effectiveness simulation model and present alternative scenarios demonstrating the impact of increasing or decreasing amounts or combinations of various practices. The CQIC Virtual Summit and 1-2 additional brief virtual meetings will result in recommendations for a final prioritized set of actionable and feasible Tailored Best Practices (TBP) for implementation. The CQIC will review and adapt relevant COVID-19 training materials and finalize a TBP implementation package. Aim 3: The investigators will employ a cluster randomized trial design with 200 group homes randomized to implementation of Tailored Best Practices (TBP) compared to 200 group homes randomized to Generic Best Practices (GBP). The investigators will engage in a three-month observational pre-randomization period to assess the baseline use of preventive practices and rates of COVID in each group home to better isolate the effect of the introduction of the TBP intervention. The investigators have also incorporated a 3-month implementation phase in order to accommodate implementing the TBP intervention with fidelity across 200 group homes during the same time period. The best practice implementation fidelity and COVID-19 incidence are co-primary outcomes with group home as the unit of analysis. Within each site, the investigators will engage in repeated measurement of these outcomes across 6 time points (Baseline, 3, 6, 9, 12, and 15 months) so that time effects (observed and latent) can be modeled precisely in the presence of any fluctuations in incidence over time. By month 16 of the project, the investigators will know the effectiveness of the Tailored Best Practices (TBP) implementation for a diverse array of state-supported group homes for SMI and ID/DD with broad generalizability to similar settings across the nation that will be broadly distributed through dissemination materials at the end of the project.

Interventions

BEHAVIORALGeneric Best Practices

GBP consists of (1) Massachusetts Executive Office of Health and Human Services distribution of standard guidelines and policies for public health prevention and management of COVID and (2) standard virtual training of the staff of the group homes in these generic COVID-19 prevention practices including recommended use of hand washing, use of PPE, and symptom-triggered screening. Group homes randomized to this intervention will receive standard recommended and fully vetted best practices with respect to preventing and managing COVID-19 based on recommendations by the CDC and on consultation with leading national experts in infectious disease working with the Commonwealth of Massachusetts. The control condition does not represent inferior or substandard practice. As findings occur and as policy leads to adjustments in recommendations during the course of the study, the GBP condition will incorporate recommendations that are appropriate and up-to-date with CDC and state policy.

BEHAVIORALTailored Best Practices

TBP consists of optimized, tailored, and highly specific COVID-19 best practices and training materials specific to the setting, staff, and residents with SMI and ID/DD in congregate living settings based on the comparative effectiveness of different types, intensities, and combinations of COVID-19 prevention practices (screening, isolation, contact tracing, use of PPP, vaccination) specifically modeled for residents and staff of congregate living settings for people with ID/DD and SMI derived by a simulation model. Results from this modeling process will be provided to stakeholders to support decision makers in prioritizing resources and practices with the greatest impact on reducing COVID-19 tailored for people with SMI and ID/DD in congregate living settings. This process to determine the content of TBP will occur as part of this study prior to randomization.

Sponsors

Patient-Centered Outcomes Research Institute
CollaboratorOTHER
Advocates
CollaboratorUNKNOWN
Bay Cove Human Services
CollaboratorOTHER
North Suffolk Mental Health Association
CollaboratorOTHER
Open Sky Community Services
CollaboratorUNKNOWN
Riverside Community Care, Inc.
CollaboratorUNKNOWN
Dartmouth College
CollaboratorOTHER
Vinfen
CollaboratorINDUSTRY
Massachusetts General Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
HEALTH_SERVICES_RESEARCH
Masking
NONE

Intervention model description

The investigators will employ a cluster-randomized trial design with \ 200 group homes randomized to the implementation of Tailored Best Practices (TBP) compared to \ 200 group homes randomized to Generic Best Practices (GBP). Randomization will occur at the level of the group home stratified by group home type (SMI versus ID/DD), incident COVID-19 infection in the staff and residents (high incidence versus low incidence), and race/ethnicity (proportion non-Hispanic Caucasian versus other). TBP and GBP will be delivered within each agency as part of routine training activities. TBP sites will receive coaching specific to the setting, staff, and residents. The best practice implementation fidelity (i.e. staff and residents participating in recommended screening, isolating, contact tracing, PPP protocols, and vaccine acceptance), and COVID-19 incidence are co-primary outcomes with group home as the unit of analysis. The outcomes will be assessed at baseline, 3, 6, 9, 12, and 15 months.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

1. All congregate care homes in Massachusetts operated by the following public-sector community-based human service organizations: Vinfen, Bay Cove, Advocates, North Suffolk, Open Sky, and Riverside 2. The group home must serve adults with SMI (Serious Mental Illness, i.e., DSM-V Diagnosis of Axis-I Mental Illness with persistent functional impairment) or adults with ID/DD (Intellectual and Developmental Disabilities) 3. All residents and staff of the home must be age 18 or older

Exclusion criteria

1\. All congregate care homes in Massachusetts not operated by any of the public-sector community-based human service organizations mentioned above

Design outcomes

Primary

MeasureTime frameDescription
New COVID-19 Group Home IncidenceThe outcome was measured at baseline, 3-, 6-, 9-, 12-, and 15-months post-baseline.New laboratory-confirmed COVID-19 cases among residents and staff. Measured as new cases per 100 person-months.
Best Practices FidelityThe outcome will be measured at baseline, 3-, 6-, 9-, 12-, and 15-months post-baseline.Best Practices Fidelity is measured by the COVID-19 Best Practices Fidelity Measure developed for this project and refined with input from stakeholders on relevant COVID-19-prevention policies (e.g. number of staff and residents participating in recommended screening, masking, hand washing, and vaccination in the group homes). The Fidelity scale was developed by operationally defining 2-4 items to assess each measure, with items scored on a 5- to 6-point continuum with a rating of 5 or 6 indicating full adherence to the fidelity standard and 1 indicating complete lack of adherence. A home's overall, continuous fidelity score was calculated by averaging measure-specific scores by time period. Each active measure was given equal weight. The percentage scores for each of these measures were then averaged together. The overall fidelity score ranged from a low of 20% (1 out of 5 on each item) to a high of 100% (5 out of 5 on each item).
Full COVID-19 Vaccination Status Among ResidentsAssessed from April 1 to the date of vaccination (up to June 30, 2022), up to 15 months for each participant.This outcome measure reflects the number of group home (GH) residents who were not fully vaccinated at the beginning of the study (by March 31, 2021) but became fully vaccinated during the study period. Individual-level dates of COVID-19 vaccinations were obtained from records maintained by GH organizations. A person was considered to be fully vaccinated when they received the full dosage of initial immunization(s) as recommended by the CDC during the study, either two initial doses of the Pfizer or Moderna vaccine or one dose of the Johnson & Johnson vaccine. Baseline vaccination rates were established from January 1, 2021, to March 31, 2021.
Full COVID-19 Vaccination Status Among StaffAssessed from April 1 to the date of vaccination (up to June 30, 2022), up to 15 months for each participant.This outcome measure reflects the number of group home (GH) staff who were not fully vaccinated at the beginning of the study (by March 31, 2021) but became fully vaccinated during the study period. Individual-level dates of COVID-19 vaccinations were obtained from records maintained by GH organizations. A person was considered to be fully vaccinated when they received the full dosage of initial immunization(s) as recommended by the CDC during the study, either two initial doses of the Pfizer or Moderna vaccine or one dose of the Johnson & Johnson vaccine. Baseline vaccination rates were established from January 1, 2021, to March 31, 2021.

Countries

United States

Participant flow

Recruitment details

Unit of recruitment and analysis was Group Home (GH). Recruitment occurred between 11/2020-12/2020. CEOs of 6 provider organizations provided letters of commitment to participate in the trial and written consent for their sites to be included. All GHs were included other than those with residents \<=18 years of age and Acquired Brain Injury homes. No individual participants were recruited, provided informed consent, or were enrolled in the study.

Pre-assignment details

No group homes enrolled in the study were excluded before assignment to groups.

Participants by arm

ArmCount
Generic Best Practices (GBP)
The 207 group homes randomized into this arm received the Generic Best Practices (GBP) intervention package as part of routine training activities. GBP consisted of state and federal standard guidelines for COVID-19 mitigation for all congregate living settings. Generic Best Practices: GBP consisted of (1) Massachusetts Executive Office of Health and Human Services distribution of standard guidelines and policies for public health prevention and management of COVID and (2) standard virtual training of the staff of the group homes in these generic COVID-19 prevention practices including recommended use of hand washing, use of PPE, and symptom-triggered screening. Group homes randomized to this intervention received standard recommended and fully vetted best practices with respect to preventing and managing COVID-19 based on recommendations by the CDC and on consultation with leading national experts in infectious disease working with the Commonwealth of Massachusetts. The control condition did not represent inferior or substandard practice. As findings occurred and as policy led to adjustments in recommendations during the course of the study, the GBP condition incorporated recommendations that were appropriate and up-to-date with CDC and state policy.
3
Generic Best Practices (GBP)
The 207 group homes randomized into this arm received the Generic Best Practices (GBP) intervention package as part of routine training activities. GBP consisted of state and federal standard guidelines for COVID-19 mitigation for all congregate living settings. Generic Best Practices: GBP consisted of (1) Massachusetts Executive Office of Health and Human Services distribution of standard guidelines and policies for public health prevention and management of COVID and (2) standard virtual training of the staff of the group homes in these generic COVID-19 prevention practices including recommended use of hand washing, use of PPE, and symptom-triggered screening. Group homes randomized to this intervention received standard recommended and fully vetted best practices with respect to preventing and managing COVID-19 based on recommendations by the CDC and on consultation with leading national experts in infectious disease working with the Commonwealth of Massachusetts. The control condition did not represent inferior or substandard practice. As findings occurred and as policy led to adjustments in recommendations during the course of the study, the GBP condition incorporated recommendations that were appropriate and up-to-date with CDC and state policy.
207
Tailored Best Practices (TBP)
The 208 group homes randomized into this arm received the Tailored Best Practices (TBP) intervention package as part of routine training activities. TBP consisted of COVID-19 mitigation measures specifically adapted for staff and residents with SMI and ID/DD in congregate living settings. Sites in this arm received coaching specific to the setting, staff, and residents. Tailored Best Practices: TBP consisted of optimized, tailored, and highly specific COVID-19 best practices and training materials specific to the setting, staff, and residents with SMI and ID/DD in congregate living settings based on the comparative effectiveness of different types, intensities, and combinations of COVID-19 prevention practices (screening, isolation, contact tracing, use of PPP, vaccination) specifically modeled for residents and staff of congregate living settings for people with ID/DD and SMI derived by a simulation model. There were four main components to Tailored Best Practices: Measurement, Feedback, and House Plans; Motivational Interviewing; Interactive Education; and Trusted Messengers.
3
Tailored Best Practices (TBP)
The 208 group homes randomized into this arm received the Tailored Best Practices (TBP) intervention package as part of routine training activities. TBP consisted of COVID-19 mitigation measures specifically adapted for staff and residents with SMI and ID/DD in congregate living settings. Sites in this arm received coaching specific to the setting, staff, and residents. Tailored Best Practices: TBP consisted of optimized, tailored, and highly specific COVID-19 best practices and training materials specific to the setting, staff, and residents with SMI and ID/DD in congregate living settings based on the comparative effectiveness of different types, intensities, and combinations of COVID-19 prevention practices (screening, isolation, contact tracing, use of PPP, vaccination) specifically modeled for residents and staff of congregate living settings for people with ID/DD and SMI derived by a simulation model. There were four main components to Tailored Best Practices: Measurement, Feedback, and House Plans; Motivational Interviewing; Interactive Education; and Trusted Messengers.
208
Total421

Baseline characteristics

CharacteristicTailored Best Practices (TBP)TotalGeneric Best Practices (GBP)
Age, Continuous44.16 years
STANDARD_DEVIATION 5.84
44.36 years
STANDARD_DEVIATION 5.87
44.54 years
STANDARD_DEVIATION 5.9
Division
ID/DD
103 Group homes206 Group homes103 Group homes
Division
SMI
105 Group homes209 Group homes104 Group homes
Race/Ethnicity, Customized
Hispanic/Latinx
5.06 percentage of participants
STANDARD_DEVIATION 7.72
4.88 percentage of participants
STANDARD_DEVIATION 7.08
4.70 percentage of participants
STANDARD_DEVIATION 6.41
Race/Ethnicity, Customized
NH Black or African-American
51.08 percentage of participants
STANDARD_DEVIATION 22.94
49.53 percentage of participants
STANDARD_DEVIATION 22.86
48.01 percentage of participants
STANDARD_DEVIATION 22.72
Race/Ethnicity, Customized
NH Other
4.37 percentage of participants
STANDARD_DEVIATION 7.27
4.26 percentage of participants
STANDARD_DEVIATION 7.08
4.16 percentage of participants
STANDARD_DEVIATION 6.9
Race/Ethnicity, Customized
NH White
35.70 percentage of participants
STANDARD_DEVIATION 22.21
37.06 percentage of participants
STANDARD_DEVIATION 22.35
38.39 percentage of participants
STANDARD_DEVIATION 22.45
Race/Ethnicity, Customized
Not answered/Missing
3.79 percentage of participants
STANDARD_DEVIATION 6.16
4.26 percentage of participants
STANDARD_DEVIATION 6.67
4.73 percentage of participants
STANDARD_DEVIATION 7.12
Sex/Gender, Customized
Female
49.53 percentage of participants
STANDARD_DEVIATION 23.86
49.13 percentage of participants
STANDARD_DEVIATION 23.65
48.74 percentage of participants
STANDARD_DEVIATION 23.48
Sex/Gender, Customized
Male
49.20 percentage of participants
STANDARD_DEVIATION 23.78
49.54 percentage of participants
STANDARD_DEVIATION 23.59
49.87 percentage of participants
STANDARD_DEVIATION 23.45
Sex/Gender, Customized
Other/missing
1.27 percentage of participants
STANDARD_DEVIATION 3.28
1.33 percentage of participants
STANDARD_DEVIATION 3.52
1.40 percentage of participants
STANDARD_DEVIATION 3.75

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
1 / 2,0591 / 1,777
other
Total, other adverse events
0 / 2,0590 / 1,777
serious
Total, serious adverse events
16 / 2,05911 / 1,777

Outcome results

Primary

Best Practices Fidelity

Best Practices Fidelity is measured by the COVID-19 Best Practices Fidelity Measure developed for this project and refined with input from stakeholders on relevant COVID-19-prevention policies (e.g. number of staff and residents participating in recommended screening, masking, hand washing, and vaccination in the group homes). The Fidelity scale was developed by operationally defining 2-4 items to assess each measure, with items scored on a 5- to 6-point continuum with a rating of 5 or 6 indicating full adherence to the fidelity standard and 1 indicating complete lack of adherence. A home's overall, continuous fidelity score was calculated by averaging measure-specific scores by time period. Each active measure was given equal weight. The percentage scores for each of these measures were then averaged together. The overall fidelity score ranged from a low of 20% (1 out of 5 on each item) to a high of 100% (5 out of 5 on each item).

Time frame: The outcome will be measured at baseline, 3-, 6-, 9-, 12-, and 15-months post-baseline.

Population: Best Practices Fidelity was measured using a voluntary survey completed only by group home Program Directors who consented to participate at each time point. Participant counts are limited to individuals in homes whose Program Directors contributed survey responses during each time period. Participants were assigned to homes based on where they lived or worked during the study period. Since some staff worked in multiple homes across both arms, the samples are not mutually exclusive.

ArmMeasureGroupValue (MEAN)
Generic Best Practices (GBP)Best Practices FidelityBaseline82.01 score on a scale
Generic Best Practices (GBP)Best Practices Fidelity3-month follow-up85.96 score on a scale
Generic Best Practices (GBP)Best Practices Fidelity6-month follow-up84.98 score on a scale
Generic Best Practices (GBP)Best Practices Fidelity9-month follow-up84.58 score on a scale
Generic Best Practices (GBP)Best Practices Fidelity12-month follow-up84.50 score on a scale
Generic Best Practices (GBP)Best Practices Fidelity15-month follow-up84.25 score on a scale
Tailored Best Practices (TBP)Best Practices Fidelity12-month follow-up84.69 score on a scale
Tailored Best Practices (TBP)Best Practices FidelityBaseline80.27 score on a scale
Tailored Best Practices (TBP)Best Practices Fidelity9-month follow-up85.24 score on a scale
Tailored Best Practices (TBP)Best Practices Fidelity3-month follow-up86.11 score on a scale
Tailored Best Practices (TBP)Best Practices Fidelity15-month follow-up85.28 score on a scale
Tailored Best Practices (TBP)Best Practices Fidelity6-month follow-up86.14 score on a scale
Comparison: A GLMM was fit with a main effect for intervention group, linear and quadratic time trends, and interaction effects between intervention and the time trend variables. The model was adjust for stratification factors, baseline fidelity score, agency and included random intercept for group home.p-value: >0.99Wald test
Primary

Full COVID-19 Vaccination Status Among Residents

This outcome measure reflects the number of group home (GH) residents who were not fully vaccinated at the beginning of the study (by March 31, 2021) but became fully vaccinated during the study period. Individual-level dates of COVID-19 vaccinations were obtained from records maintained by GH organizations. A person was considered to be fully vaccinated when they received the full dosage of initial immunization(s) as recommended by the CDC during the study, either two initial doses of the Pfizer or Moderna vaccine or one dose of the Johnson & Johnson vaccine. Baseline vaccination rates were established from January 1, 2021, to March 31, 2021.

Time frame: Assessed from April 1 to the date of vaccination (up to June 30, 2022), up to 15 months for each participant.

Population: Residents with SMI or ID/DD who were not fully vaccinated by March 31, 2021.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Generic Best Practices (GBP)Full COVID-19 Vaccination Status Among Residents73 Participants
Tailored Best Practices (TBP)Full COVID-19 Vaccination Status Among Residents77 Participants
Comparison: A Cox frailty model was fit to evaluate differences in the hazard of vaccination uptake between arms separately within the combined population of residents with SMI and ID/DD. This model included a main effect for intervention arm and additionally adjusted for stratification factors, GH agency, and GH-level log-normal frailties.p-value: >0.9995% CI: [0.79, 1.84]Regression, Cox
Primary

Full COVID-19 Vaccination Status Among Staff

This outcome measure reflects the number of group home (GH) staff who were not fully vaccinated at the beginning of the study (by March 31, 2021) but became fully vaccinated during the study period. Individual-level dates of COVID-19 vaccinations were obtained from records maintained by GH organizations. A person was considered to be fully vaccinated when they received the full dosage of initial immunization(s) as recommended by the CDC during the study, either two initial doses of the Pfizer or Moderna vaccine or one dose of the Johnson & Johnson vaccine. Baseline vaccination rates were established from January 1, 2021, to March 31, 2021.

Time frame: Assessed from April 1 to the date of vaccination (up to June 30, 2022), up to 15 months for each participant.

Population: Staff who were not fully vaccinated by March 31, 2021.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Generic Best Practices (GBP)Full COVID-19 Vaccination Status Among Staff467 Participants
Tailored Best Practices (TBP)Full COVID-19 Vaccination Status Among Staff471 Participants
Comparison: A Cox frailty model was fit to evaluate differences in the hazard of vaccination uptake between arms separately within the staff population. This model included a main effect for intervention arm and additionally adjusted for stratification factors, GH agency, and GH-level log-normal frailties.p-value: >0.9995% CI: [0.86, 1.15]Regression, Cox
Primary

New COVID-19 Group Home Incidence

New laboratory-confirmed COVID-19 cases among residents and staff. Measured as new cases per 100 person-months.

Time frame: The outcome was measured at baseline, 3-, 6-, 9-, 12-, and 15-months post-baseline.

Population: One group home in the GBP arm closed between the 6- and 9-month follow-up periods. The BL sample size here is different than the BL descriptive table. For the BL descriptive table, we assigned participants on an intent-to-treat basis in order to avoid overlap. However, for our analysis, participant allocation was based on the home that they lived or worked in during the study period. Since some staff worked in multiple homes across both arms, the samples are not mutually exclusive.

ArmMeasureGroupValue (MEAN)
Generic Best Practices (GBP)New COVID-19 Group Home Incidence3-month follow-up0.16 New COVID-19 cases per 100 person-months
Generic Best Practices (GBP)New COVID-19 Group Home Incidence9-month follow-up2.27 New COVID-19 cases per 100 person-months
Generic Best Practices (GBP)New COVID-19 Group Home IncidenceBaseline1.61 New COVID-19 cases per 100 person-months
Generic Best Practices (GBP)New COVID-19 Group Home Incidence12-month follow-up5.67 New COVID-19 cases per 100 person-months
Generic Best Practices (GBP)New COVID-19 Group Home Incidence6-month follow-up0.69 New COVID-19 cases per 100 person-months
Generic Best Practices (GBP)New COVID-19 Group Home Incidence15-month follow-up2.22 New COVID-19 cases per 100 person-months
Tailored Best Practices (TBP)New COVID-19 Group Home Incidence6-month follow-up0.55 New COVID-19 cases per 100 person-months
Tailored Best Practices (TBP)New COVID-19 Group Home IncidenceBaseline1.40 New COVID-19 cases per 100 person-months
Tailored Best Practices (TBP)New COVID-19 Group Home Incidence3-month follow-up0.09 New COVID-19 cases per 100 person-months
Tailored Best Practices (TBP)New COVID-19 Group Home Incidence15-month follow-up2.35 New COVID-19 cases per 100 person-months
Tailored Best Practices (TBP)New COVID-19 Group Home Incidence9-month follow-up2.35 New COVID-19 cases per 100 person-months
Tailored Best Practices (TBP)New COVID-19 Group Home Incidence12-month follow-up5.75 New COVID-19 cases per 100 person-months
Comparison: A Poisson GLMM was fit with a main effect for intervention group, linear and quadratic time trends, and interaction effects between intervention and the time trend variables. The model was adjust for stratification factors, baseline infection incidence, agency and included random intercept for group home.p-value: 0.89Test of joint null hypothesis from model

Source: ClinicalTrials.gov · Data processed: Feb 12, 2026