Evaluación de llamadas de re-contacto con usuarias de la Línea 155

Last registered on June 06, 2023
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Pre-Trial

Trial Information

General Information

Title
Evaluación de llamadas de re-contacto con usuarias de la Línea 155
RCT ID
AEARCTR-0009425
Initial registration date
June 02, 2023

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
June 06, 2023, 4:19 PM EDT

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Last updated
June 06, 2023, 6:12 PM EDT

Last updated is the most recent time when changes to the trial's registration were published.

Locations

Country
Colombia
Region

Primary Investigator

Name
Sebastian Salomon-Ballada
Affiliation
The Behavioral Insights Team
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Other Primary Investigator(s)

PI Name
Paloma Bellatin
PI Affiliation
The Behavioral Insights Team
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PI Name
Marta Garnelo
PI Affiliation
The Behavioral Insights Team
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PI Name
Santiago M. Perez-Vincent
PI Affiliation
Inter-American Development Bank
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PI Name
María del Pilar Lopez Uribe
PI Affiliation
Universidad de los Andes
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Additional Trial Information

Status
In development
Start date
2023-06-08
End date
2023-12-22
Keywords
Behavior, Crime, Violence, & Conflict, Gender
Additional Keywords
Gender-based violence
JEL code(s)
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
Domestic violence carries vast individual and social costs. Survivor support services have a high potential to mitigate these costs, but various barriers to access faced by survivors diminish their reach and effectiveness. This study evaluates the impact of a change in the service protocol of Colombia's national hotline for women victims of violence (Línea 155) on the likelihood of victims accessing institutional help services and the type of services used. The key change in the hotline’s service protocol introduced a follow-up call to survivors aimed at addressing behavioral barriers often faced by victims when seeking institutional help. To measure the impact of this change in the service protocol, we will use an experimental design (RCT) and compare the usage of institutional help services among callers who did and did not receive the follow-up call.
External Link(s)

Registration Citation

Citation
Perez-Vincent, Santiago M. et al. 2023. "Evaluación de llamadas de re-contacto con usuarias de la Línea 155." AEA RCT Registry. June 06. https://doi.org/10.1257/rct.9425-2.0
Sponsors & Partners

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Experimental Details

Interventions

Intervention(s)
Línea 155, the Colombian national hotline for women victims of violence, is introducing a change in its service protocol. The new protocol will add follow-up calls (to callers who give their consent to be recontacted) aimed at easing behavioral barriers usually faced by victims when seeking institutional help and assess their usage of victim services. We will experimentally evaluate the impact of the follow-up calls on the likelihood of callers using institutional help services and the type of services used.
Intervention Start Date
2023-06-08
Intervention End Date
2023-12-22

Primary Outcomes

Primary Outcomes (end points)
Use of any victim services [self-reported, binary (yes/no)]
Primary Outcomes (explanation)
Approximately one month after their call to Línea 155, callers who provide their consent to be recontacted (our sample) will be called back by Línea 155. In this call, the Línea 155 operator will ask three short questions: whether she has accessed the referred services, any other support services, and, if not, the reasons or barriers not to access the support services. The responses to the first two questions will be used to create a binary indicator variable of usage of help services. The variable will take value 1 (one) for those who have used any service, and 0 otherwise.

Secondary Outcomes

Secondary Outcomes (end points)
1. Use of specific victim help services [self-reported, four variables, binary (yes/no)]

2. Barriers to access help services [self-reported, two variables, binary (yes/no)]
Secondary Outcomes (explanation)
1. Approximately one month after their call to Línea 155, callers who provide their consent to be recontacted (our sample) will be called back by Línea 155. In this call, the Línea 155 operator will ask three short questions: whether she has accessed the referred services, any other support services, and, if not, the reasons or barriers not to access the support services. The responses to the first two questions will be used to create binary variables indicating the usage of different types of help services: medical, psychosocial, legal, and police. For each type of help service, the variable will take value 1 (one) for those who have used the service, and 0 otherwise.

2. Approximately one month after their call to Línea 155, callers who provide their consent to be recontacted (our sample) will be called back by Línea 155. In this call, the Línea 155 operator will ask three short questions: whether she has accessed the referred services, any other support services, and, if not, the reasons or barriers not to access the support services. The responses to the last question will be used to create binary variables indicating the presence of different types of access barriers to help services: behavioral and structural. For each type of barrier, the variable will take value 1 (one) for those who indicate it was their main barrier to access a service, and 0 otherwise.

Experimental Design

Experimental Design
We will conduct a Randomized Controlled Trial (RCT), with two comparison groups.
Experimental Design Details
We will conduct a Randomized Controlled Trial (RCT), with two comparison groups. Callers to Línea 155 who consent to be recontacted will be randomly assigned to a treatment or control group. The treatment group will receive a follow-up call one week after their initial call to Línea 155 and a short call for a survey approximately a month after the initial call. The control group will only receive the short call for the survey.
Randomization Method
The method will be a quasi-randomization based on data collected by the Línea 155’s system for all calls received. For example, individuals will be assigned to the treatment or control group depending on the value (even or odd) of the minute (or seconds) their first call to Línea 155 is received (or on the value of any other arbitrary system-generated variable). The underlying assumption is that the value of the minute (or seconds) of their first call to Línea 155 is exogenous to the (potential) outcomes of interest.
Randomization Unit
The randomization unit is the individual.
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
Up to 6800 individuals
Sample size: planned number of observations
Up to 6800 individuals
Sample size (or number of clusters) by treatment arms
The sample will be split evenly between treatment and control groups.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Unit: 3.38 percentage points Percentage: 6.75% Standard deviation: 0.135 SD
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
Comité de Ética de la Investigación - Universidad de Los Andes
IRB Approval Date
2021-11-29
IRB Approval Number
1480/2021
Analysis Plan

Post-Trial

Post Trial Information

Study Withdrawal

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Intervention

Is the intervention completed?
No
Data Collection Complete
Data Publication

Data Publication

Is public data available?
No

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials