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CHALO! 2.0: A Mobile Technology Based Intervention to Accelerate HIV Testing and Linkage to Preventive Treatment.

CHALO! 2.0: A Mobile Technology Based Intervention to Accelerate HIV Testing and Linkage to Preventive Treatment.

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04814654
Enrollment
1004
Registered
2021-03-24
Start date
2022-04-22
Completion date
2024-12-30
Last updated
2026-01-20

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

Conditions

Hiv

Keywords

HIV screening, HIV testing, HIV prevention, HIV linkage to care

Brief summary

While HIV prevalence among Men Seeking Men (MSM) in India is 10-15 times higher than in the general population (4.3% vs 0.3%), current interventions for Indian MSM have limited reach. In order to reduce the burden of HIV in MSM, innovative, far-reaching prevention and treatment strategies are needed. Guided by the increase access to internet-based social and mobile technologies (SMT) (e.g., SMS, WhatsApp, dating apps) globally and in India, this is a 3-arm parallel, pragmatic randomized controlled trial of community-developed, theory based behavioral intervention (CHALO! 2.0) delivered via WhatsApp (secure SMS application) compared to an Attention-Matched Control, or a Digital Coupon for free HIV testing only control conditions. The primary outcomes are HIV-testing at 6 months (3 months after the end of the intervention) and linkage-to-preventive care (counseling or pre-exposure prophylaxis) at 12 months. The secondary outcomes are the frequency of HIV-testing by 18 months.

Interventions

BEHAVIORALCHALO! 2.0

The components of the intervention are: Contents of digital-media (sent twice/week for 12 weeks) on the following topics: HIV testing, prevention, treatment, linkage-to-care; Personalized digital coupon for free testing; Webpage listing testing/ care sites; access to online outreach workers.

The components of the intervention are: Contents of digital-media (sent twice/week for 12 weeks) only related to general health information; Personalized digital coupon for free testing; Webpage listing testing/ care sites; access to online outreach workers.

BEHAVIORALDigital coupon only (DCO)

The components of the intervention are: Digital coupon for free HIV testing; Webpage listing testing/ care sites; access to online outreach workers.

Sponsors

Albert Einstein College of Medicine
Lead SponsorOTHER
The Humsafar Trust
CollaboratorUNKNOWN
National Institute of Mental Health (NIMH)
CollaboratorNIH
Hunter College of City University of New York
CollaboratorOTHER
Fenway Community Health
CollaboratorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Investigator)

Masking description

The Data Manager (who has no contact with study participants) will assign participants to a study group and cross-reference encrypted files with our technology consultant. Participants will be unaware of arm assignment and will receive automated messages to complete online surveys. Study staff collecting HIV testing and linkage-to-care outcomes will also be blinded to the participants' study arm. Finally, the team of Virtual Peers will not be informed of study hypothesis.

Intervention model description

Subjects meeting all eligibility criteria will be randomized to one of three study arms. Participants will be assigned either to CHALO! 2.0 (intervention), to an Attention-Matched Control, or to a Digital Coupon for free HIV testing only arm. After baseline survey completion, the research team will use random blocked design, with a fixed block size, to stratify randomization by prior HIV testing history (never tested vs. not tested in \>6 months).

Eligibility

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

Inclusion criteria

* live or work in Mumbai or Thane * fluent in Hindi or English * have had anal sex with men in the past one year * report that they have either never been tested for HIV, are unaware of HIV test results, or are HIV-negative with last HIV test at any time, and have engaged in anal sex since last HIV test * able to provide and verify a WhatsApp mobile number and email address * willing to answer online surveys for 18 months

Exclusion criteria

* participating in a concurrent HIV-related study * intention to move out of the Mumbai metropolitan area in the next six months

Design outcomes

Primary

MeasureTime frameDescription
Verified HIV TestingWithin 6 months from randomizationVerified HIV testing was assessed as a dichotomous measure (yes/no) of receipt of a documented HIV test. The number/percentage of participants who were verified to have been HIV tested within 6 months of randomization is summarized by study arm/group.
Linkage to PreventionWithin 12 months from randomizationLinkage to prevention was assessed as a dichotomous (yes/no) measure and defined as a composite of either receipt of counseling or PrEP use within 12 months of randomization. The number/percentage of participants who meet the linkage to care composite criteria is summarized by study arm/group.

Secondary

MeasureTime frameDescription
Frequency of HIV TestingWithin 18 months from randomizationAmong participants who were tested, frequency of HIV testing is defined as the average (mean) number of verified HIV tests per participant within 18 months from randomization. Frequency of HIV testing is a measure of public health intervention effectiveness. Results are summarized by study arm/group using descriptive statistics.
Receipt of a Verified HIV TestWithin 12 and 18 months from randomizationReceipt of a verified HIV test within 18 months of randomization was assessed as a dichotomous (yes/no) measure. The number/percentage of participants who were verified to have received HIV testing at each protocol-specified timepoint (i.e., within 12 months and within 18 months of randomization) is summarized by study arm/group.
Self-reported HIV TestWithin 6 months from randomizationSelf-reported HIV test within 6 months of randomization was assessed as a dichotomous (yes/no) measure. The number/percentage of participants who self-reported as having been HIV tested, but were unverified, within 6 months from randomization is summarized by study arm/group.
Linkage to HIV Treatment for HIV Positive ParticipantsWithin 12 months from randomizationLinkage to HIV treatment was assessed as a dichotomous (yes/no) measure of whether participants who tested HIV-positive formally sought treatment. The number/percentage of HIV positive participants who sought treatment within 12 months from randomization is summarized by study arm/group.
Linkage to Antiretroviral Therapy (ART) Initiation for HIV Positive ParticipantsWithin 12 months from randomizationLinkage to ART initiation was assessed as a dichotomous (yes/no) measure of whether participants who tested HIV positive initiated ART treatment. The number/percentage of HIV positive participants who initiated ART within 12 months from randomization is summarized by study arm/group.
Linkage to Pre-Exposure Prophylaxis (PrEP) for HIV Negative ParticipantsWithin 12 months from randomizationLinkage to PrEP was assessed as a dichotomous (yes/no) measure of whether participants who tested HIV negative were on a PrEP regimen. The number/percentage of HIV negative participants who were on a PrEP regimen within 12 months from randomization is summarized by study arm/group.
Linkage to CounselingWithin 12 months from randomizationLinkage to counseling was assessed as a dichotomous (yes/no) measure of whether participants received counseling treatment. The number/percentage of participants who received status neutral counseling treatment within 12 months from randomization is summarized by study arm/group.
Sexual Behaviors - Consistent Condom UseWithin 18 months from randomizationSexual Behavior will be evaluated based on consistent condom use. Specifically, this measure will be assessed as a dichotomous (yes/no) measure as to whether participants engaged in condomless anal sex during the study. Results will be summarized by study arm.
Sexual Behaviors - Number of Sexual PartnersWithin 18 months from randomizationSexual Behavior will be also be evaluated based on the number of sexual partners a participant had during the course of the study. This measure will be summarized by study arm using basic descriptive statistics.

Countries

India

Contacts

PRINCIPAL_INVESTIGATORViraj V Patel, MD, MPH

Associate Professor, Division of General Internal Medicine, Albert Einstein College of Medicine

Participant flow

Pre-assignment details

For this study a total of 1191 were consented. Upon quality checking 187 participants were excluded after enrollment. After these exclusions 1004 participants were considered enrolled and were randomized.

Participants by arm

ArmCount
CHALO! 2.0
MSM randomized to this arm will receive twice weekly digital media messages for 12 weeks about HIV, HIV-testing, prevention, and treatment and a a link to a study-specific webpage listing MSM specific testing, prevention, and care resources. Participants will also be able to interact with online outreach workers. CHALO! 2.0: The components of the intervention are: Contents of digital-media (sent twice/week for 12 weeks) on the following topics: HIV testing, prevention, treatment, linkage-to-care; Personalized digital coupon for free testing; Webpage listing testing/ care sites; access to online outreach workers.
339
Attention-matched Control (AMC)
MSM randomized to the AMC arm will receive twice weekly digital media messages for 12 weeks about general health and a link to a study-specific webpage listing testing resources and MSM-specific services. Participants will also be able to interact with online outreach workers. Attention-matched control (AMC): The components of the intervention are: Contents of digital-media (sent twice/week for 12 weeks) only related to general health information; Personalized digital coupon for free testing; Webpage listing testing/ care sites; access to online outreach workers.
332
Digital Coupon Only Control (DCO)
MSM randomized to the DCO arm will receive, at study entry, a digital coupon for free HIV testing and a study specific webpage link listing testing and MSM specific services. Digital coupon only (DCO): The components of the intervention are: Digital coupon for free HIV testing; Webpage listing testing/ care sites; access to online outreach workers.
333
Total1,004

Baseline characteristics

CharacteristicTotalCHALO! 2.0Digital Coupon Only Control (DCO)Attention-matched Control (AMC)
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
1004 Participants339 Participants333 Participants332 Participants
Age, Continuous28 Years
STANDARD_DEVIATION 7
28 Years
STANDARD_DEVIATION 7
28 Years
STANDARD_DEVIATION 7
28 Years
STANDARD_DEVIATION 7
Race and Ethnicity Not Collected0 Participants
Region of Enrollment
India
1004 participants339 participants333 participants332 participants
Sex: Female, Male
Female
0 Participants0 Participants0 Participants0 Participants
Sex: Female, Male
Male
1004 Participants339 Participants333 Participants332 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 3390 / 3320 / 333
other
Total, other adverse events
1 / 3390 / 3320 / 333
serious
Total, serious adverse events
0 / 3390 / 3320 / 333

Outcome results

Primary

Linkage to Prevention

Linkage to prevention was assessed as a dichotomous (yes/no) measure and defined as a composite of either receipt of counseling or PrEP use within 12 months of randomization. The number/percentage of participants who meet the linkage to care composite criteria is summarized by study arm/group.

Time frame: Within 12 months from randomization

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
CHALO! 2.0Linkage to Prevention31 Participants
Attention-matched Control (AMC)Linkage to Prevention47 Participants
Digital Coupon Only Control (DCO)Linkage to Prevention32 Participants
Primary

Verified HIV Testing

Verified HIV testing was assessed as a dichotomous measure (yes/no) of receipt of a documented HIV test. The number/percentage of participants who were verified to have been HIV tested within 6 months of randomization is summarized by study arm/group.

Time frame: Within 6 months from randomization

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
CHALO! 2.0Verified HIV Testing30 Participants
Attention-matched Control (AMC)Verified HIV Testing30 Participants
Digital Coupon Only Control (DCO)Verified HIV Testing29 Participants
Secondary

Frequency of HIV Testing

Among participants who were tested, frequency of HIV testing is defined as the average (mean) number of verified HIV tests per participant within 18 months from randomization. Frequency of HIV testing is a measure of public health intervention effectiveness. Results are summarized by study arm/group using descriptive statistics.

Time frame: Within 18 months from randomization

Secondary

Linkage to Antiretroviral Therapy (ART) Initiation for HIV Positive Participants

Linkage to ART initiation was assessed as a dichotomous (yes/no) measure of whether participants who tested HIV positive initiated ART treatment. The number/percentage of HIV positive participants who initiated ART within 12 months from randomization is summarized by study arm/group.

Time frame: Within 12 months from randomization

Secondary

Linkage to Counseling

Linkage to counseling was assessed as a dichotomous (yes/no) measure of whether participants received counseling treatment. The number/percentage of participants who received status neutral counseling treatment within 12 months from randomization is summarized by study arm/group.

Time frame: Within 12 months from randomization

Secondary

Linkage to HIV Treatment for HIV Positive Participants

Linkage to HIV treatment was assessed as a dichotomous (yes/no) measure of whether participants who tested HIV-positive formally sought treatment. The number/percentage of HIV positive participants who sought treatment within 12 months from randomization is summarized by study arm/group.

Time frame: Within 12 months from randomization

Secondary

Linkage to Pre-Exposure Prophylaxis (PrEP) for HIV Negative Participants

Linkage to PrEP was assessed as a dichotomous (yes/no) measure of whether participants who tested HIV negative were on a PrEP regimen. The number/percentage of HIV negative participants who were on a PrEP regimen within 12 months from randomization is summarized by study arm/group.

Time frame: Within 12 months from randomization

Secondary

Receipt of a Verified HIV Test

Receipt of a verified HIV test within 18 months of randomization was assessed as a dichotomous (yes/no) measure. The number/percentage of participants who were verified to have received HIV testing at each timepoint is summarized by study arm/group.

Time frame: Within 18 months from randomization

Secondary

Self-reported HIV Test

Self-reported HIV test within 6 months of randomization was assessed as a dichotomous (yes/no) measure. The number/percentage of participants who self-reported as having been HIV tested, but were unverified, within 6 months from randomization is summarized by study arm/group.

Time frame: Within 6 months from randomization

Other Pre-specified

Alcohol and Substance Use

The alcohol and substance usage reported by participants

Time frame: within six months from randomization

Other Pre-specified

Condomless Anal Sex

A dichotomous measure (yes/no) of whether a participant engaged in condomless anal sex

Time frame: within six months from randomization

Other Pre-specified

HIV and MSM Stigma

Stigma related to HIV and men who have sex with men (MSM) reported by participants

Time frame: within six months from randomization

Other Pre-specified

HIV and PrEP Knowledge

The HIV and PrEP knowledge retained by participants

Time frame: within six months from randomization

Other Pre-specified

HIV Testing

a dichotomous measure (yes/no) of whether a participant intends to obtain an HIV test in the next one month

Time frame: within six months from randomization

Other Pre-specified

Linkage to Care

a composite of linkage to PrEP, counseling, or HIV treatment (yes/no)

Time frame: Within 18 months from randomization

Other Pre-specified

PEP Use

a dichotomous measure (yes/no) of whether a participant sought PEP treatment

Time frame: within six months from randomization

Other Pre-specified

Risk Perception

The risk perception reported by participants

Time frame: within six months from randomization

Other Pre-specified

Self-efficacy

The self-efficacy reported by participants

Time frame: within six months from randomization

Other Pre-specified

Social Support

The social support reported by participants

Time frame: within six months from randomization

Other Pre-specified

STI Testing / Treatment

a dichotomous measure (yes/no) of whether a participant sought further STI testing or treatment

Time frame: within six months from randomization

Other Pre-specified

Type of Site Accessed

Type of prevention or treatment care site accessed (i.e., Humsafar Trust, public institution, private institution)

Time frame: within six months from randomization

Source: ClinicalTrials.gov · Data processed: Feb 5, 2026