1989-95 cohort
Among the 1989-95 cohort, nearly 70% responded to Survey 2 in 2014, 55% to Survey 3 in 2015, 59% responded to Survey 4 in 2016 and 56% to Survey 5 in 2017 (See Table below). Retention of young women was associated with older age, higher education, higher self-rated health status, and low engagement with adverse health behaviors, the method of recruitment was a key determinant of study participation in the multivariate model. Although women were more likely to be recruited into the cohort via social media (eg, Facebook), retention over time was higher for women recruited through traditional media and referral approaches.
(Loxton D, Harris ML, Forder P, Powers J, Townsend N, Byles J, Mishra G (2019) Factors Influencing Web-Based Survey Response for a Longitudinal Cohort of Young Women Born Between 1989 and 1995. J Med Internet Res. (3):e11286). https://doi.org/10.2196/11286
Participation and retention of 17,010 women in the 1989-95 cohort of women who were aged 18-23 years at Survey 1 in 2013*
| Survey Age in years | Survey 2 19-24 | Survey 3 20-25 | Survey 4 21-26 | Survey 5 22-27 | Survey 6 24-30 |
|---|---|---|---|---|---|
| Deceased | 1 | 6 | 8 | 13 | 22 |
| Withdrawn | 682 | 695 | 1745 | 1944 | 2049 |
| Total ineligible | 683 | 701 | 1753 | 1957 | 2071 |
| Contacted but did not return survey | 2362 | 3879 | 1850 | 1813 | 1329 |
| Unable to contact participant | 2621 | 3469 | 4400 | 4745 | 5264 |
| Total non-respondents | 4983 | 7348 | 6250 | 6558 | 6593 |
| Respondents completed survey | 11344 | 8961 | 9007 | 8495 | 8346 |
| Eligible at current survey | 16327 | 16309 | 15257 | 15053 | 14939 |
| Response rate as % eligible | 69.5% | 54.9% | 59.0% | 56.4% | 55.9% |