Table 1 Initial characteristics of 1025 Norwegian children born in 1993–1995 and invited to the Stavanger study according to consenting or not to the first follow-up 11–12 years later a)
Consented (n = 617) | Did not consent (n = 409) | ||||||
|---|---|---|---|---|---|---|---|
Variable | n | n | p | ||||
Gender: boys, n (%) | 617 | 296 | (48.0) | 408 | 220 | (53.9) | 0.065b) |
Preeclampsia, n (%) | 617 | 230 | (37.3) | 409 | 137 | (33.5) | 0.231b) |
Maternal age, years, mean, 95% CI | 610 | 28.0 | (27.7, 28.4) | 408 | 27.6 | (27.2, 28.1) | 0.194c) |
Gestational age, weeks; mean, 95% CI | 604 | 39.3 | (39.1, 39.5) | 343 | 39.2 | (39.0, 39.5) | 0.855c) |
Birth weight z-scored) | 590 | -0.17 | (-0.27, -0.07) | 339 | -0.06 | (-0.18, 0.06) | 0.169c) |