Predicting participation of people with impaired vision in epidemiological studies.

ABSTRACT:

Background

The characteristics of the target group and the design of an epidemiologic study, in particular the recruiting methods, can influence participation. People with vision impairment have unique characteristics because those invited are often elderly and totally or partially dependent on help to complete daily activities such as travelling to study sites. Therefore, participation of people with impaired vision in studies is less predictable than predicting participation for the general population.

Methods

Participants were recruited in the context of a study of prevalence and costs of visual impairment in Portugal (PCVIP-study). Participants were recruited from 4 Portuguese public hospitals. Inclusion criteria were: acuity in the better eye from 0.5 decimal (0.30logMA

SUBMITTER: Ramos PL 

PROVIDER: S-EPMC6123934 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature