Table 3 Regression coefficients (b) for socioeconomic and developmental conditions during childhood and intellectual abilities predicting six-year change in physical, affective, and cognitive functioning in adulthood, adjusted for age, sex, and baseline level of functioning (N = 1211)a
From: To what extent does IQ 'explain' socio-economic variations in function?
| Â | Â | Six-year change in: | |||||
|---|---|---|---|---|---|---|---|
| Â | Â | Physical functioning | Affective functioning | Cognitive functioning | |||
| Â | Â | B | 95% CI | B | 95% CI | B | 95% CI |
Early socioeconomic conditions | Â | Â | Â | Â | Â | Â | Â |
   Deprivation | No | 0 | (reference) | 0 | (reference) | 0 | (reference) |
| Â | Yes | 3.94 | (1.26, 6.61) | 1.66 | (-1.44, 4.77) | -0.09 | (-3.89, 3.71) |
   Occupational level of father | High | 0 | (reference) | 0 | (reference) | 0 | (reference) |
| Â | Intermediate | -0.15 | (-1.96, 1.65) | 0.85 | (-1.24, 2.95) | 2.51 | (0.02, 5.01) |
| Â | Low | -0.08 | (-1.78, 1.61) | 1.54 | (-0.41, 3.50) | 3.72 | (1.40, 6.05) |
   Educational level of father | High | 0 | (reference) | 0 | (reference) | 0 | (reference) |
| Â | Intermediate | -0.42 | (-2.48, 1.65) | 3.29 | (0.75, 5.82) | 2.57 | (-0.52, 5.67) |
| Â | Low | 0.27 | (-1.51, 2.04) | 2.86 | (0.70, 5.02) | 2.96 | (0.32, 5.60) |
   Educational level of mother | High | 0 | (reference) | 0 | (reference) | 0 | (reference) |
| Â | Intermediate | 0.44 | (-1.94, 2.82) | -0.22 | (-3.09, 2.65) | 1.15 | (-2.36, 4.65) |
| Â | Low | -0.36 | (-2.46, 1.75) | 0.91 | (-1.63, 3.44) | 0.61 | (-2.47, 3.70) |
Early developmental factors | Â | Â | Â | Â | Â | Â | Â |
   Assisted birth | No | 0 | (reference) | 0 | (reference) | 0 | (reference) |
| Â | Yes | 0.68 | (-2.75, 4.11) | -1.77 | (-5.54, 2.00) | 0.03 | (-4.71, 4.76) |
   Low birth weight | No | 0 | (reference) | 0 | (reference) | 0 | (reference) |
| Â | Yes | 1.24 | (-2.03, 4.51) | -0.47 | (-4.47, 3.53) | -1.04 | (-5.86, 3.77) |
   Nuchal cord | No | 0 | (reference) | 0 | (reference) | 0 | (reference) |
| Â | Yes | -0.09 | (-4.46, 4.27) | 1.57 | (-3.83, 6.98) | 0.53 | (-0.72, 1.78) |
   Delayed milestones | No | 0 | (reference) | 0 | (reference) | 0 | (reference) |
| Â | Yes | 4.90 | (1.65, 8.14) | 0.07 | (-3.94, 4.07) | 0.68 | (-4.35, 5.71) |
   Severe disease in childhood | No | 0 | (reference) | 0 | (reference) | 0 | (reference) |
| Â | Yes | 0.16 | (-2.47, 2.79) | 1.41 | (-1.63, 4.45) | 1.27 | (-2.39, 4.94) |
Intellectual abilities | High | 0 | (reference) | 0 | (reference) | 0 | (reference) |
| Â | Intermediate | 1.83 | ((0.14, 3.52) | 0.44 | (-1.51, 2.38) | -0.33 | (-2.68, 2.02) |
| Â | Low | 2.92 | (1.16, 4.69) | 2.37 | (0.33, 4.41) | 4.60 | (2.14, 7.06) |