Table 3 Results from multivariable hierarchical analysis of determining factors grouped by levels with WPPSI-R cognitive scores.
From: Determinants of cognitive function in childhood: A cohort study in a middle income context
Variables | Model A (Blocks 1 and 2) | Model B (Blocks 1, 2 and 3) | Model C (Blocks 1, 2 and 4) | Model D (Blocks 1, 2, 3 and 4) | Model E (Blocks 1, 2, 3, 4 and 5) | Model F (Blocks 1, 2,3,4 and 6) | Model G (Blocks 1, 2, 3, 4, 5 and 6) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
R2 | β(95% CI) | R2 | β(95% CI) | R2 | β(95% CI) | R2 | β(95% CI) | Change β ** | R2 | β(95% CI) | R2 | β(95% CI) | R2 | β(95% CI) | Change β*** | |
Level 1 Socioeconomic status | ||||||||||||||||
Socioeconomics | 20.2 | 26.3 | 30.1 | 34.4 | 39.8 | 35.3 | 40.3 | |||||||||
Family purchasing power | -60.9 | -25.0 | ||||||||||||||
Low | ||||||||||||||||
Regular | 3.9 (0.5; 7.3)** | 2.7 (-0.5; 6.0)** | 2.5 (-0.6; 5.6)** | 1.5 (-1.6; 4.6)** | 0.4 (-2.6; 3.5)** | 1.3 (-1.7; 4.4)** | 0.3 (-2.7; 3.3)** | |||||||||
Good | 13.3 (9.3; 17.4) | 9.5 (5.2; 13.7) | 8.1 (4.1; 12.1) | 5.2 (1.1; 9.3) | 5.1 (1.1; 9.1) | 5.0 (0.9; 9.1) | 4.9 (0.9; 8.9) | |||||||||
Family characteristics | ||||||||||||||||
Mother's schooling | ||||||||||||||||
None or ≤ 5 years | ||||||||||||||||
> 5 years | 5.4 (2.3; 8.5) | 5.7 (2.8; 8.6) | 3.9 (1.1; 6.7) | 3.9 (1.1; 6.7) | -27.7 | 3.6 (0.9; 6.3) | 3.7 (1.0; 6.5) | 3.5 (0.8; 6.1) | -66.0 | |||||||
Father-child contact | ||||||||||||||||
None | ||||||||||||||||
Some | 4.8 (1.1; 8.5) | 4.3 (0.7; 7.8) | 4.1 (0.7;7.5) | 3.5 (0.2; 6.8) | -27.0 | 3.9 (0.6; 7.1) | 3.6 (0.3; 6.9) | 3.9 (0.6; 7.1) | -8.5 | |||||||
Level 2 Physical environment and Psychosocial stimulation | ||||||||||||||||
Sanitary conditions | ||||||||||||||||
Household | ||||||||||||||||
Very Poor | ||||||||||||||||
Poor | ||||||||||||||||
Good | 5.9 (1.7; 10.1) | 4.7 (0.7; 8.7) | 4.7 (0.9; 8.5) | 4.2 (0.2; 8.1) | 4.3 (0.5; 8.2) | -40.0 | ||||||||||
Neighbourhood | 0.4 (-0.8; 3.0)** | 0.7 (-2.5; 4.0)** | 1.2 (-1.9; 4.4)** | 0.2 (-3.0; 3.5)** | 0.9 (-2.2; 4.1)** | |||||||||||
Bad | ||||||||||||||||
Regular | ||||||||||||||||
Good | 6.2 (2.5; 9.9) | 5.8 (2.4; 9.3) | 6.1 (2.8; 9.5) | 6.0 (2.6; 9.4) | 6.2 (2.9; 9.6) | -22.4 | ||||||||||
Psychosocial stimulation | 5.0 (0.0; 1.5)** | 4.5 (1.1; 7.8)** | 5.3 (2.1; 8.5)** | 4.5 (1.2; 7.8)** | 5.3 (2.1; 8.5)** | |||||||||||
HOME score (1999) | ||||||||||||||||
Nursery school attendance | 0.6 (0.3; 0.8) | 0.5 (0.3; 0.7) | 0.5 (0.3; 0.8) | 0.5 (0.3; 0.7) | 0.5 (0.3; 0.7) | 00.0 | ||||||||||
Never attended | 7.8 (4.5; 11.1) | 7.3 (4.1; 10.5) | 8.4 (5.2; 11.5) | 6.9 (3.7; 10.1) | 8.0 (4.9; 11.2) | -12.0 | ||||||||||
Attended at some time | ||||||||||||||||
Level 3 Child characteristics and Health | ||||||||||||||||
Nutrition and Infection | ||||||||||||||||
Birth weigh | ||||||||||||||||
≤ 2500 g | ||||||||||||||||
More than 2500 g | ||||||||||||||||
Height-for-age | 6.6 (3.3; 9.9) | 3.5 (0.5; 6.5) | 6.0 (2.7; 9.4) | |||||||||||||
≤ -2 Z scores | ||||||||||||||||
> -2 Z scores | 2.9 (-0.2; 5.8) | |||||||||||||||