Table 1.

Follow-up rates at 18 years of age according to baseline characteristics of the cohort

	Percent located at 18 years of age
Monthly family income (US$)
≤50	72.7
51—100	80.1
101—300	84.0
301—500	79.3
>500	76.6
Maternal schooling at delivery (years)
≤4	76.2
5—8	81.7
9—11	75.8
≥12	78.9
Birth weight in grams
<2500	77.5
2500—2999	78.1
3000—3499	78.7
3500—3999	80.1
≥4000	79.9
Change in weight-for-age z-score from birth to mean age 20 months*
<−0.67	81.7
−0.66 to 0.66	84.6
>0.67	84.5

^*Those infants who were not followed up in the 1984 follow-up visit were excluded.