TABLE 3

Age at Standing With Assistance in Infancy and Developmental Scale Scores at Age 4 Years: Upstate KIDS Study (Singletons, n = 314)

Developmental SkillModel 1Model 2Model 3
B (95% CI), PB (95% CI), PB (95% CI), P
Adaptive−8.8 (–12.6 to –5.1), <.001−8.7 (–12.6 to –4.7), <.001−5.3 (–9.0 to –1.6), .01
Personal/social−6.8 (–13.1 to –0.6), .03−5.9 (–12.4 to 0.6), .08−0.2 (–6.3 to 5.9), .95
Communication−7.9 (–12.2 to –3.6), <.001−7.9 (12.5 to –3.3), .001−3.5 (–7.7 to 0.7), .11
Motor−9.6 (–14.8 to –4.5), <.001−8.9 (–14.3 to –3.5), .001−4.9 (–10.0 to 0.2), .06
Cognitive−11.2 (–15.8 to –6.6), <.001−10.6 (–16.4 to –4.8), <.001−5.9 (–11.5 to –0.4), .04
  • Developmental skills were assessed by using the BDI-2. Model 1: adjusted for maternal age, education, race, prepregnancy BMI, smoking, drinking, being married, having private insurance, having older sibling for the child, and a child’s sex, age, and day care attendance before 12 months. Model 2: additionally adjusted for gestational age and birth weight. Model 3: additionally adjusted for developmental screening status and exposure to infertility treatment.