Table 1. Follow-up rate in different phases of the study according to some characteristics of the cohort.
| Percent located |
|||
|---|---|---|---|
| 2000 visit | 2004-5 visit | 2004-5 visit and donated blood | |
| Gender | |||
| Male | 78.9 | 78.2 | 65.0 |
| Females | − | 76.6 | 67.5 |
| Family income at birth in multiples of 1982 minimum wages | |||
| ≤ 1 | 72.7 | 74.7 | 61.2 |
| 1.1-3 | 80.1 | 80.8 | 70.3 |
| 3.1-6 | 84.0 | 76.0 | 67.2 |
| 6.1-10 | 79.4 | 68.3 | 56.0 |
| > 10 | 76.7 | 74.0 | 59.7 |
| Maternal schooling at birth (in years) | |||
| ≤ 4 | 76.2 | 78.4 | 66.6 |
| 5-8 | 81.7 | 79.2 | 68.5 |
| 9-11 | 75.8 | 75.8 | 64.5 |
| ≥ 12 | 79.6 | 71.0 | 59.8 |
| Birthweight in grams | |||
| < 2500 | 77.5 | 77.9 | 52.8 |
| 2500-2999 | 78.1 | 78.3 | 67.4 |
| 3000-3499 | 78.7 | 76.2 | 66.9 |
| 3500-3999 | 80.2 | 79.8 | 70.5 |
| ≥ 4000 | 79.9 | 71.6 | 60.3 |
| Type of delivery | |||
| Vaginal | 77.7 | 77.2 | 66.2 |
| Caesarean section | 82.1 | 77.9 | 66.2 |
| Number of subjects evaluated | 2250 | 4297 | 3914 |
Includes subjects interviewed as well as those who are known to have died;