Table 3 Associations between child characteristics and antibiotic use in 8-month old children, Malmö, Sweden.
Characteristics | Use of antibiotics n (%) | Crude OR 95% CI | Adjusted OR 95% CI Model 1a) | Adjusted OR 95% CI Model 2b) | Adjusted OR 95% CI Model 3c) | Adjusted OR 95% CI Model 4d) |
|---|---|---|---|---|---|---|
Gender | ||||||
Girl | 645 (19.2) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Boy | 862 (25.0) | 1.40 (1.25–1.57) | 1.39 (1.24–1.57) | 1.42 (1.26–1.60) | 1.44 (1.28–1.62) | 1.35 (1.18–1.55) |
Low birth weight (< 2500 g) | ||||||
No | 1453 (22.0) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Yes | 85 (28.7) | 1.43 (1.10–1.85) | 1.48 (1.14–1.93) | 1.50 (1.15–1.96) | 1.49 (1.13–1.96) | 1.87 (1.36–2.58) |
Nr in the family of brothers and sisters | ||||||
Firstborn | 592 (16.9) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Secondborn and more | 831 (27.5) | 1.86 (1.65–2.09) | 1.88 (1.67–2.12) | 1.89 (1.67–2.14) | 1.86 (1.64–2.11) | 1.39 (1.20–1.60) |
Breastfeeding | ||||||
0 months | 71 (32.1) | 1.71 (1.26–2.31) | 1.75 (1.28–2.38) | 1.75 (1.28–2.40) | 1.64 (1.19–2.26) | 1.92 (1.31–2.80) |
0.1–3 months | 211 (24.8) | 1.19 (0.98–1.43) | 1.18 (0.97–1.43) | 1.11 (0.91–1.36) | 1.03 (0.84–1.27) | 0.97 (0.77–1.24) |
3.1–6 months | 430 (21.7) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
6.1–8 months | 72 (23.2) | 1.09 (0.82–1.45) | 1.11 (0.83–1.48) | 1.01 (0.75–1.37) | 0.99 (0.73–1.34) | 0.92 (0.65–1.32) |
Still breastfeeding at the age of 8 months | ||||||
Yes | 712 (21.2) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
No | 718 (23.2) | 1.12 (0.99–1.26) | 1.11 (0.99–1.25) | 1.14 (1.01–1.29) | 1.10 (0.97–1.25) | 1.09 (0.94–1.26) |
Allergies | ||||||
No | 587 (20.0) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Yes | 59 (29.2) | 1.65 (1.20–2.27) | 1.66 (1.20–2.28) | 1.56 (1.12–2.19) | 1.62 (1.16–2.28) | 1.40 (0.93–2.10) |