Table 3.
Participation a in baseline and first two follow-up visits, LEGACY Girls Study, 2011–2015
| Baselinevisit | Follow-up 1(at 6 months) | Follow-up 2 (at 12 months) | |
|---|---|---|---|
| N (%) | N (%) | N (%) | |
|
|
|||
| Visit completed | 1,040 b | 1,003 (96%) c | 977 (94%) c |
| Withdrawal from study | 12 | 12 | |
| Not available or declined visit | 25 | 39 | |
| Questionnaires completed by mothers/guardians | |||
| Growth and Development Questionnaire | 999 (96%) | 953 (92%) | 900 (87%) |
| Behavioral Questionnaire | 945 (91%) d | n/a | 916 (88%) e |
| Questionnaires completed by daughters | |||
| Daughters ages ≥10 years | 530 | 604 | 686 |
| Growth and Development Questionnaire | 510 (96%) | 546 (90%) | 602 (88%) |
| Behavioral Questionnaire | 481 (91%) | n/a | 610 (89%) |
| Biospecimen collection | |||
| Urine | 1,014 (98%) | 951 (91%) | 915 (88%) |
| Blood | 427 (41%) | 404 (39%) | n/a |
| Saliva | 587 (56%) | 340 f | 454 f |
| Anthropometry completed | 1,020 (98%) | 954 (92%) | 923 (89%) |
| Clinical breast Tanner staging g | |||
| Daughters offered Tanner staging | 305 | 292 | 285 |
| Tanner staging completed | 254 (83%) | 247 (85%) | 234 (82%) |
a
Participation rates are provided for the baseline cohort of 1,040 girls, unless specified otherwise.
b
Number of girls enrolled in cohort.
c
Completion of at least one component of follow-up visit.
d
At baseline, the Behavioral Questionnaire was not offered to mothers/guardians of 67 girls who spoke Spanish only or due to delayed IRB approval.
e
At the second follow-up, the Behavioral Questionnaire was not offered to mothers/guardians of 27 girls who spoke Spanish only.
f
Includes repeat saliva samples for some girls.
g
Clinical breast Tanner staging was performed at the New York and Utah study sites only.