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Table 3 Associations between child characteristics and antibiotic use in 8-month old children, Malmö, Sweden.

From: Antibiotic use among 8-month-old children in Malmö, Sweden – in relation to child characteristics and parental sociodemographic, psychosocial and lifestyle factors

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)
  1. a) Adjusted for year and gender
  2. b) Adjusted for year, gender and parents' country of birth
  3. c) Adjusted for year, gender, parents' country of birth and maternal educational level
  4. d) Adjusted for year, gender, parents' country of birth, maternal educational level and recurrent infections