Table 1.
Characteristics of birth to Twenty Plus analytical sample
| Measure | Males (N) | Males, n (%) | Females (N) | Females, n (%) | |
|---|---|---|---|---|---|
| Household assets in early life in early life, tertile | 1 (lowest) | 700 | 299 (43%) | 764 | 308 (40%) |
| 2 | 155 (22%) | 203 (27%) | |||
| 3 (highest) | 246 (35%) | 254 (33%) | |||
| Early life assets imputed | Yes | 857 | 107 (12%) | 917 | 133 (14%) |
| Household assets in early life at age 7 y, tertile | 1 (lowest) | 708 | 307 (43%) | 786 | 337 (43%) |
| 2 | 192 (27%) | 200 (25%) | |||
| 3 (highest) | 209 (30%) | 250 (32%) | |||
| Age 7 y asset source | Age 7 y | 708 | 689 (97%) | 786 | 747 (95%) |
| Child stress, number of study waves in which above-median events were reported | None | 785 | 341 (43%) | 856 | 340 (40%) |
| One | 283 (36%) | 337 (39%) | |||
| Two or three | 161 (21%) | 180 (21%) | |||
| Number of stress inventories completed | 1 | 785 | 148 (19%) | 856 | 149 (17%) |
| 2 | 351 (45%) | 420 (49%) | |||
| 3 | 286 (36%) | 288 (34%) | |||
| BMIZ 5 ya | 585 | .33 (.96) | 651 | .21 (.91) | |
| HAZ 5 ya | 585 | −.68 (.92) | 651 | −.64 (.91) | |
| BMIZ 8 ya | 486 | −.04 (.9) | 493 | −.03 (.96) | |
| HAZ 8 ya | 488 | −.62 (1) | 493 | −.69 (.94) | |
| Genital (males)/breast (females) development classb | 1 (Latest and slowest) | 861 | 55 (6%) | 923 | 212 (23%) |
2  3 |
316 (37%) 429 (50%) |
229 (25%) 351 (38%) |
|||
| 4 (Earliest and fastest) | 61 (7%) | 131 (14%) | |||
| Pubic hair development classb | 1 (Latest and slowest) | 861 | 253 (29%) | 923 | 310 (34%) |
2 
|
504 (59%) | 499 (54%) | |||
| 3 (Earliest and fastest) | 104 (12%) | 114 (12%) | |||
| Age at Genital (males)/breast (females) development onsetc | y | 861 | 12.7 (1.5) | 923 | 12.3 (1.4) |
| Age at pubic hair development onsetc | y | 861 | 12.6 (1.3) | 923 | 12.5 (1.4) |
| Age at menarche | y | -- | -- | 906 | 12.7 (1.22) |
BMIZ = body mass index for age z-scores; HAZ = height-for-age z-scores.
a
Based on World Health Organization Child Growth Standards. Presented as mean (SD).
b
Latent classes derived from repeated measures of the Tanner sexual maturation scale [19]. Individuals in Class 1 started puberty later and progressed through puberty slower than their peers in other classes and individuals in the highest class had the earliest pubertal timing and fastest tempo.
c
Age at which Tanner stage 2 was reached.