Table 1 Characteristics of children and parents according to entry in daycare
Study population | Baseline population with complete data | No daycare in first year of life (ref) | Daycare entry in first year of life | P-value |
|---|---|---|---|---|
Number = 1,728 | Number = 350 | Number = 1,378 | Â | |
Parental characteristics | Â | Â | Â | Â |
Parental education level (%) | Â | Â | Â | <0.001 |
Low/middle | 17.3 | 39.7 | 11.6 | Â |
High (at least one parent) | 82.7 | 60.3 | 88.4 | Â |
Child characteristics | Â | Â | Â | Â |
Gender (% boy) | 49.2 | 47.4 | 49.7 | 0.241 |
Duration of exclusive breastfeeding (%) | Â | Â | Â | <0.001 |
No breastfeeding | 18.9 | 27.4 | 16.8 | Â |
0 to 3 months | 44.3 | 38.6 | 45.8 | Â |
4 to 6 months | 22.8 | 17.4 | 24.2 | Â |
>6 months | 13.9 | 16.6 | 13.3 | Â |
% with older siblings | 51.6 | 58.9 | 49.7 | 0.001 |
IR of URTI and AOM per age category /100 child-years (95% confidence interval) | Â | Â | Â | Â |
0 to 1 year | 92.9 (88.3 to 97.7) | 59.1 (51.1 to 67.9) | 100.4 (96.0 to 107.0) | <0.001 |
1 to 2 year | 76.5 (72.2 to 80.8) | 71.2 (63.0 to 81.4) | 77.6 (72.9 to 82.6) | 0.28 |
2 to 3 year | 46.0 (42.5 to 49.7) | 52.5 (44.7 to 61.2) | 44.2 (40.4 to 48.3) | 0.07 |
3 to 4 year | 33.0 (29.7 to 36.4) | 38.5 (31.5 to 46.7) | 31.5 (28.0 to 35.3) | 0.09 |
4 to 5 year | 28.9 (25.7 to 32.5) | 41.7 (33.9 to 50.8) | 25.0 (21.6 to 28.8) | <0.001 |
5 to 6 year | 25.5 (22.1 to 2.92) | 41.6 (33.2 to 51.6) | 20.4 (17.0 to 24.3) | <0.001 |