Type 2 Diabetes
Conditions
Keywords
UMS, medication schedule, diabetes, drug labeling
Brief summary
The purpose of this study test the effectiveness of the Universal Medication Schedule (UMS), which was designed as a strategy to standardize and simplify medication instructions to support safe and effective prescription drug use among diabetic.
Detailed description
Research has shown the UMS (1) improves patients' understanding of how much to take of a medicine and when, and (2) reduces the number of times per day patients would take a multi-drug regimen. In this study, UMS tools will be exported into a second electronic health record platform to demonstrate ease of dissemination. Also, as patients may require assistance outside of clinic visits to adapt their prescription regimen to the UMS, this study will test the potential benefit of daily short message service (SMS) text reminders via cell phone. We will conduct a three-arm, provider-randomized controlled trial among English and Spanish-speaking adults taking three or more prescription drugs to evaluate the effectiveness of the UMS strategy, with and without SMS text reminders, to improve patient understanding, consolidation, and adherence compared to usual care.We will conduct a three-arm, provider-randomized trial at two community health centers in Chicago, IL to evaluate the UMS and UMS+SMS text reminder strategies compared to usual care. English and Spanish-speaking patients who are prescribed three or more medications will be recruited and assessed by phone at baseline, three months, and six months.
Interventions
Patients of providers randomized to the UMS arm will receive study-related educational tools at their primary care visit to support the understanding, regimen consolidation, and use of prescriptions.
In addition to the components from the UMS strategy arm, patients will receive daily text reminders for 7 days, with the option of extending reminders, following a study medication prescription.
Sponsors
Study design
Eligibility
Inclusion criteria
* diagnosis of type II diabetes * age 30 or older * taking 3 or more prescription medications for chronic conditions * English or Spanish speaking
Exclusion criteria
* self-reported severe, uncorrectable vision * hearing impairment * cognitive impairment * not responsible for administering his/her own medications * not able to receive text messages on their cell phone
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Prescription Understanding | 6 months after baseline | Predictive probabilities of prescription understanding will be calculated based on patients' ability to correctly dose their prescription medications using unadjusted Generalized Estimating Equation models, specifying the binomial family and logit link, with medication as the unit of analysis. Correct dosing per medication will be scored as yes or no, reflecting having demonstrated all of the following: proper dose (# of pills), spacing (hours between doses), frequency (# of times per day), and total pills per day. Results are presented as predicted probabilities with 95% Confidence Intervals. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Medication Adherence: Pill Count | 6 months after baseline | Predictive probabilities of medication adherence will be calculated based on telephone pill counts using unadjusted Generalized Estimating Equation models, specifying the binomial family and logit link, with medication as the unit of analysis. Pills taken/pills prescribed will be calculated for each medication and scored as adherent for that medication if that score is between 80% and 120%. Results are presented as predicted probabilities with 95% Confidence Intervals. |
| Medication Knowledge | 6 months after baseline | Predictive probabilities of medication knowledge will be calculated based on patients' ability to identify each medication's purpose and side effects, risks, warnings, and benefits using unadjusted Generalized Estimating Equation models, specifying the binomial family and logit link, with medication as the unit of analysis. Patients will be asked through a structured questionnaire about each of the above via structured, open-ended items. Each medication will be scored as correct/incorrect if the participant knew the purpose and could name at least 1 side effect, risk, or warning of the medication. Results are presented as predicted probabilities with 95% Confidence Intervals. |
| Medication Adherence: PMAQ | 6 months after baseline | Predictive probabilities of medication adherence will be calculated based on a 4-item validated Patient Medication Adherence Questionnaire (PMAQ) using unadjusted Generalized Estimating Equation models, specifying the binomial family and logit link, with medication as the unit of analysis. The PMAQ assesses adherence behaviors by asking patients to self-report missed/wrong doses in past 4 days, scoring each medication as adherent for that medication if no missed doses were reported. Results are presented as predicted probabilities with 95% Confidence Intervals. |
| Medication Adherence: Pharmacy Records | 6 months after baseline | Predictive probabilities of primary medication adherence will be calculated based on the proportion of days covered (PDC) with medication obtained from pharmacy records using unadjusted Generalized Estimating Equation models, specifying the binomial family and logit link, with medication as the unit of analysis. PDC is calculated by summing the number of days' supply obtained by a patient during a given time period and dividing by the number of days for which the patient was prescribed the medication. Each medication is scored as adherent if the patient was covered for that medication more than 80% of the time. Results are presented as predicted probabilities with 95% Confidence Intervals. |
Other
| Measure | Time frame | Description |
|---|---|---|
| Changes in Low-density Lipoprotein Cholesterol (LDL) | 6 months before baseline to 1 year after baseline | An exploratory analysis will be conducted to investigate the impact of receiving the UMS in either intervention arm on biologic outcomes for these prevalent conditions. Low-density lipoprotein cholesterol (LDL) will be obtained from patients' electronic health records. Differences will be measured between the last clinical measurement prior to baseline assessment and the last measured value during the study period (closest to 6 month assessment). |
| Changes in Hemoglobin A1c (hbA1c) | 6 months before baseline to 1 year after baseline | An exploratory analysis will be conducted to investigate the impact of receiving the UMS in either intervention arm on biologic outcomes for these prevalent conditions. Hemoglobin A1c (hbA1c) will be obtained from patients' electronic health records. Differences will be measured between the last clinical measurement prior to baseline assessment and the last measured value during the study period (closest to 6 month assessment). |
| Changes in Blood Pressure | 6 months before baseline to 1 year after baseline | An exploratory analysis will be conducted to investigate the impact of receiving the UMS in either intervention arm on biologic outcomes for these prevalent conditions. Systolic blood pressure will be obtained from patients' electronic health records. Differences will be measured between the last clinical measurement prior to baseline assessment and the last measured value during the study period (closest to 6 month assessment). |
Countries
United States
Participant flow
Participants by arm
| Arm | Count |
|---|---|
| Usual Care Employ the current standard of care. No intervention. | 157 |
| UMS Strategy Patients of providers randomized to the UMS arm will receive study-related educational tools at their primary care visit to support the understanding, regimen consolidation, and use of prescriptions.
1. Prescription instructions will be adapted to UMS to establish four standard time intervals for prescribing and dispensing of medicine. UMS instructions also use simplified text and numeric characters instead of words to detail dose.
2. Single-page, plain language medication information sheets with content from a patient's perspective and following health literacy best practices.
3. A list of their current medications each corresponding to a set of instructions and a checkbox for morning, noon, evening, and bedtime medicine to help patients visually depict when to take their medicines. | 168 |
| UMS Strategy + SMS Texting Reminders In addition to the components from the UMS strategy arm, patients will receive daily text reminders for 7 days, with the option of extending reminders, following a study medication prescription.
UMS Strategy: Patients of providers randomized to the UMS arm will receive study-related educational tools at their primary care visit to support the understanding, regimen consolidation, and use of prescriptions.
SMS Texting Reminders: In addition to the components from the UMS strategy arm, patients will receive daily text reminders for 7 days, with the option of extending reminders, following a study medication prescription. | 127 |
| Total | 452 |
Withdrawals & dropouts
| Period | Reason | FG000 | FG001 | FG002 |
|---|---|---|---|---|
| 3 Month | Partially completed, unable to finish | 2 | 2 | 1 |
| 3 Month | Unable to reach for 3 month | 35 | 29 | 26 |
| 3 Month | Withdrawal by Subject | 9 | 3 | 4 |
| 6 Month | Death | 1 | 0 | 0 |
| 6 Month | Lost to Follow-up | 27 | 26 | 15 |
| 6 Month | Partially completed, unable to finish | 0 | 1 | 0 |
| 6 Month | Withdrawal by Subject | 0 | 2 | 2 |
Baseline characteristics
| Characteristic | Usual Care | UMS Strategy | UMS Strategy + SMS Texting Reminders | Total |
|---|---|---|---|---|
| Age, Categorical <=18 years | 0 Participants | 0 Participants | 0 Participants | 0 Participants |
| Age, Categorical >=65 years | 26 Participants | 26 Participants | 32 Participants | 84 Participants |
| Age, Categorical Between 18 and 65 years | 131 Participants | 142 Participants | 95 Participants | 368 Participants |
| Age, Continuous | 56.5 years STANDARD_DEVIATION 9.4 | 56.4 years STANDARD_DEVIATION 9.3 | 57.5 years STANDARD_DEVIATION 9.9 | 56.7 years STANDARD_DEVIATION 9.5 |
| Ethnicity (NIH/OMB) Hispanic or Latino | 113 Participants | 127 Participants | 91 Participants | 331 Participants |
| Ethnicity (NIH/OMB) Not Hispanic or Latino | 43 Participants | 41 Participants | 36 Participants | 120 Participants |
| Ethnicity (NIH/OMB) Unknown or Not Reported | 1 Participants | 0 Participants | 0 Participants | 1 Participants |
| Race (NIH/OMB) American Indian or Alaska Native | 1 Participants | 1 Participants | 3 Participants | 5 Participants |
| Race (NIH/OMB) Asian | 3 Participants | 6 Participants | 1 Participants | 10 Participants |
| Race (NIH/OMB) Black or African American | 32 Participants | 27 Participants | 23 Participants | 82 Participants |
| Race (NIH/OMB) More than one race | 1 Participants | 0 Participants | 2 Participants | 3 Participants |
| Race (NIH/OMB) Native Hawaiian or Other Pacific Islander | 0 Participants | 0 Participants | 0 Participants | 0 Participants |
| Race (NIH/OMB) Unknown or Not Reported | 8 Participants | 4 Participants | 2 Participants | 14 Participants |
| Race (NIH/OMB) White | 112 Participants | 130 Participants | 96 Participants | 338 Participants |
| Region of Enrollment United States | 157 participants | 168 participants | 127 participants | 452 participants |
| Sex: Female, Male Female | 100 Participants | 108 Participants | 87 Participants | 295 Participants |
| Sex: Female, Male Male | 57 Participants | 60 Participants | 40 Participants | 157 Participants |
Adverse events
| Event type | EG000 affected / at risk | EG001 affected / at risk | EG002 affected / at risk |
|---|---|---|---|
| deaths Total, all-cause mortality | — / — | — / — | — / — |
| other Total, other adverse events | 0 / 157 | 0 / 168 | 0 / 127 |
| serious Total, serious adverse events | 0 / 157 | 0 / 168 | 0 / 127 |
Outcome results
Prescription Understanding
Predictive probabilities of prescription understanding will be calculated based on patients' ability to correctly dose their prescription medications using unadjusted Generalized Estimating Equation models, specifying the binomial family and logit link, with medication as the unit of analysis. Correct dosing per medication will be scored as yes or no, reflecting having demonstrated all of the following: proper dose (# of pills), spacing (hours between doses), frequency (# of times per day), and total pills per day. Results are presented as predicted probabilities with 95% Confidence Intervals.
Time frame: 6 months after baseline
Population: All participants who completed the 6 month assessment and had complete data for the outcome for at least 1 medication.
| Arm | Measure | Value (LEAST_SQUARES_MEAN) |
|---|---|---|
| Usual Care | Prescription Understanding | 0.81 Probability |
| UMS Strategy | Prescription Understanding | 0.82 Probability |
| UMS Strategy + SMS Texting Reminders | Prescription Understanding | 0.78 Probability |
Medication Adherence: Pharmacy Records
Predictive probabilities of primary medication adherence will be calculated based on the proportion of days covered (PDC) with medication obtained from pharmacy records using unadjusted Generalized Estimating Equation models, specifying the binomial family and logit link, with medication as the unit of analysis. PDC is calculated by summing the number of days' supply obtained by a patient during a given time period and dividing by the number of days for which the patient was prescribed the medication. Each medication is scored as adherent if the patient was covered for that medication more than 80% of the time. Results are presented as predicted probabilities with 95% Confidence Intervals.
Time frame: 6 months after baseline
Population: Participants who filled medications at Walgreens during the study period.
| Arm | Measure | Value (LEAST_SQUARES_MEAN) |
|---|---|---|
| Usual Care | Medication Adherence: Pharmacy Records | 0.49 Probability of adherence |
| UMS Strategy | Medication Adherence: Pharmacy Records | 0.59 Probability of adherence |
| UMS Strategy + SMS Texting Reminders | Medication Adherence: Pharmacy Records | 0.55 Probability of adherence |
Medication Adherence: Pill Count
Predictive probabilities of medication adherence will be calculated based on telephone pill counts using unadjusted Generalized Estimating Equation models, specifying the binomial family and logit link, with medication as the unit of analysis. Pills taken/pills prescribed will be calculated for each medication and scored as adherent for that medication if that score is between 80% and 120%. Results are presented as predicted probabilities with 95% Confidence Intervals.
Time frame: 6 months after baseline
Population: All participants who completed the 6 month assessment and had complete outcome data for at least 1 medication
| Arm | Measure | Value (LEAST_SQUARES_MEAN) |
|---|---|---|
| Usual Care | Medication Adherence: Pill Count | 0.41 Probability of adherence |
| UMS Strategy | Medication Adherence: Pill Count | 0.31 Probability of adherence |
| UMS Strategy + SMS Texting Reminders | Medication Adherence: Pill Count | 0.34 Probability of adherence |
Medication Adherence: PMAQ
Predictive probabilities of medication adherence will be calculated based on a 4-item validated Patient Medication Adherence Questionnaire (PMAQ) using unadjusted Generalized Estimating Equation models, specifying the binomial family and logit link, with medication as the unit of analysis. The PMAQ assesses adherence behaviors by asking patients to self-report missed/wrong doses in past 4 days, scoring each medication as adherent for that medication if no missed doses were reported. Results are presented as predicted probabilities with 95% Confidence Intervals.
Time frame: 6 months after baseline
Population: All participants who completed the 6 month assessment and had complete outcome data for at least 1 medication
| Arm | Measure | Value (LEAST_SQUARES_MEAN) |
|---|---|---|
| Usual Care | Medication Adherence: PMAQ | 0.71 Probability of adherence |
| UMS Strategy | Medication Adherence: PMAQ | 0.72 Probability of adherence |
| UMS Strategy + SMS Texting Reminders | Medication Adherence: PMAQ | 0.77 Probability of adherence |
Medication Knowledge
Predictive probabilities of medication knowledge will be calculated based on patients' ability to identify each medication's purpose and side effects, risks, warnings, and benefits using unadjusted Generalized Estimating Equation models, specifying the binomial family and logit link, with medication as the unit of analysis. Patients will be asked through a structured questionnaire about each of the above via structured, open-ended items. Each medication will be scored as correct/incorrect if the participant knew the purpose and could name at least 1 side effect, risk, or warning of the medication. Results are presented as predicted probabilities with 95% Confidence Intervals.
Time frame: 6 months after baseline
Population: All participants who completed the 6 month assessment and had complete outcome data for at least 1 medication
| Arm | Measure | Value (LEAST_SQUARES_MEAN) |
|---|---|---|
| Usual Care | Medication Knowledge | 0.21 Probability of medication knowledge |
| UMS Strategy | Medication Knowledge | 0.28 Probability of medication knowledge |
| UMS Strategy + SMS Texting Reminders | Medication Knowledge | 0.26 Probability of medication knowledge |
Changes in Blood Pressure
An exploratory analysis will be conducted to investigate the impact of receiving the UMS in either intervention arm on biologic outcomes for these prevalent conditions. Systolic blood pressure will be obtained from patients' electronic health records. Differences will be measured between the last clinical measurement prior to baseline assessment and the last measured value during the study period (closest to 6 month assessment).
Time frame: 6 months before baseline to 1 year after baseline
Population: All participants with both a baseline and 6 month systolic blood pressure measurement
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Usual Care | Changes in Blood Pressure | -1.4 mmHG | Standard Deviation 14.1 |
| UMS Strategy | Changes in Blood Pressure | 0.5 mmHG | Standard Deviation 14 |
| UMS Strategy + SMS Texting Reminders | Changes in Blood Pressure | 0.1 mmHG | Standard Deviation 15.5 |
Changes in Hemoglobin A1c (hbA1c)
An exploratory analysis will be conducted to investigate the impact of receiving the UMS in either intervention arm on biologic outcomes for these prevalent conditions. Hemoglobin A1c (hbA1c) will be obtained from patients' electronic health records. Differences will be measured between the last clinical measurement prior to baseline assessment and the last measured value during the study period (closest to 6 month assessment).
Time frame: 6 months before baseline to 1 year after baseline
Population: All participants with both a baseline and 6 month hbA1c measurement
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Usual Care | Changes in Hemoglobin A1c (hbA1c) | -0.2 percent of glycated hemoglobin | Standard Deviation 1.3 |
| UMS Strategy | Changes in Hemoglobin A1c (hbA1c) | -0.1 percent of glycated hemoglobin | Standard Deviation 1.5 |
| UMS Strategy + SMS Texting Reminders | Changes in Hemoglobin A1c (hbA1c) | -0.2 percent of glycated hemoglobin | Standard Deviation 1.4 |
Changes in Low-density Lipoprotein Cholesterol (LDL)
An exploratory analysis will be conducted to investigate the impact of receiving the UMS in either intervention arm on biologic outcomes for these prevalent conditions. Low-density lipoprotein cholesterol (LDL) will be obtained from patients' electronic health records. Differences will be measured between the last clinical measurement prior to baseline assessment and the last measured value during the study period (closest to 6 month assessment).
Time frame: 6 months before baseline to 1 year after baseline
Population: All participants with both a baseline and 6 month LDL measurement
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Usual Care | Changes in Low-density Lipoprotein Cholesterol (LDL) | -10.1 mg/dL | Standard Deviation 26.7 |
| UMS Strategy | Changes in Low-density Lipoprotein Cholesterol (LDL) | -17.1 mg/dL | Standard Deviation 66.5 |
| UMS Strategy + SMS Texting Reminders | Changes in Low-density Lipoprotein Cholesterol (LDL) | -23.4 mg/dL | Standard Deviation 38.7 |