Effects of addressing presbyopia on productivity, retention and eye glasses adherence for workers in the readymade garment industry

Last registered on February 09, 2021

Pre-Trial

Trial Information

General Information

Title
Effects of addressing presbyopia on productivity, retention and eye glasses adherence for workers in the readymade garment industry
RCT ID
AEARCTR-0007142
Initial registration date
February 08, 2021

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
February 09, 2021, 7:36 AM EST

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

Locations

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Primary Investigator

Affiliation
University of Michigan

Other Primary Investigator(s)

PI Affiliation
Queen's University Belfast
PI Affiliation
University of Michigan

Additional Trial Information

Status
In development
Start date
2021-03-01
End date
2022-12-31
Secondary IDs
Abstract
In 2013, the World Health Organization (WHO) set eye health as a priority by creating the“Universal Eye Health: A Global Action Plan 2014-2019.” The WHO’s reasoning is intuitive; poor visual health can impair quality of life in a number of ways- by limiting physical activity, causing emotional health problems, damaging work performance. In India, 55million people suffer from presbyopia (the degeneration of sight related to age). Apart from the large-scale negative impact on quality of life, untreated visual impairments including presbyopia, are estimated to cost the Indian economy $37 billion in productivity losses annually. In this study, we aim to explore the effects of addressing presbyopia of workers in the context of the readymade garment industry in India. We will screen workers and provide eye glasses to those that have a presbyopic refractive error. We will explore adherence to eyeglasses, price sensitivity, effects on productivity and retention of such workers.

To do so, we propose a large-scale randomized controlled trial (RCT) in India which will: 1)measure adherence to eye glasses and willingness to pay of presbyopic sewers with glasses either free of cost or upon the payment of a nominal amount; 2) We will observe whether being in different treatment groups influences how regularly the worker wears glasses to work.
External Link(s)

Registration Citation

Citation
Adhvaryu, Achyuta, Nathan Congdon and Anant Nyshadham. 2021. "Effects of addressing presbyopia on productivity, retention and eye glasses adherence for workers in the readymade garment industry." AEA RCT Registry. February 09. https://doi.org/10.1257/rct.7142
Experimental Details

Interventions

Intervention(s)
We propose a large-scale randomized controlled trial (RCT) in India which will: 1)measure adherence to eye glasses and willingness to pay of presbyopic sewers with glasses either free of cost or upon the payment of a nominal amount; 2) We will observe whether being in different treatment groups influences how regularly the worker wears glasses to work.
Intervention Start Date
2021-03-01
Intervention End Date
2021-06-30

Primary Outcomes

Primary Outcomes (end points)
Adherence to glasses wear, willingness to pay, productivity, self-reported well-being, visual quality of life, attitudes towards glasses
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Participants will be randomized to receive glasses paying a nominal amount or for free. The latter will be randomized once more to one of three treatment arms with different monitoring mechanisms for adherence.
Experimental Design Details
Not available
Randomization Method
Randomization done in office by a computer
Randomization Unit
Individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
350 adults
Sample size: planned number of observations
350 adults
Sample size (or number of clusters) by treatment arms
110 workers pay for glasses: 55 pay a nominal amount, 55 get a surprise discount; 80 workers receive glasses for free, 80 workers receive glasses for free and are monitored by supervisors and 80 workers receive glasses for free and are monitored by vision champions
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB

Institutional Review Boards (IRBs)

IRB Name
University of Michigan IRB #3 - Behavioral Science - Health Sciences and Behavioral Sciences
IRB Approval Date
2021-02-02
IRB Approval Number
HUM00179252