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Table 2 Adjusteda incidence rate (95% CI) per person year by ethnicity and birthweight category (defined using low birth-weight criteria of birthweight < 2500 g and by customized growth centiles (SGA))

From: Is small size at birth associated with early childhood morbidity in white British and Pakistani origin UK children aged 0–3? Findings from the born in Bradford cohort study

  White British N = 4119 Pakistani N = 4731
GP appointments Rate per person year
 Not Low birthweight 15.8 (15.4–16.2) 23.7 (23.1–24.2)
 Low birthweight 17.9 (15.9–19.9) 26.5 (24.5–28.4)
 Not SGA 15.8 (15.4–16.2) 23.5 (23.0–24.1)
 SGA 16.4 (14.7–18.0) 25.3 (23.9–26.7)
Analgesic prescriptions Rate per person year
 Not low birthweight 2.75 (2.64–2.85) 6.35 (6.14–6.57)
 Low birthweight 3.53 (2.87–4.18) 6.22 (5.53–6.91)
 Not SGA 2.74 (2.64–2.85) 6.30 (6.08–6.53)
 SGA 3.39 (2.81–3.98) 6.51 (5.93–7.09)
Antibacterial prescriptions Rate per person year
 Not low birthweight 2.63 (2.52–2.74) 3.63 (3.50–3.76)
 Low birthweight 3.45 (2.77–4.13) 3.91 (3.45–4.37)
 Not SGA 2.63 (2.52–2.74) 3.64 (3.50–3.78)
 SGA 2.89 (2.35–3.44) 3.65 (3.29–4.01)
Bronchodilator prescriptions Rate per person year
 Not low birthweight 1.43 (1.30–1.55) 1.36 (1.25–1.48)
 Low birthweight 1.99 (1.19–2.79) 2.03 (1.46–2.60)
 Not SGA 1.42 (1.30–1.55) 1.37 (1.25–1.49)
 SGA 1.38 (0.81–1.95) 1.52 (1.14–1.91)
Hospital Emergency Rate per person year
 Not low birthweight 0.35 (0.32–0.38) 0.44 (0.40–0.47)
 Low birthweight 0.56 (0.37–0.75) 0.80 (0.61–0.99)
 Not SGA 0.35 (0.32–0.38) 0.42 (0.39–0.45)
 SGA 0.40 (0.26–0.55) 0.59 (0.47–0.71)
Hospital Elective Rate per 100 person years
 Not low birthweight 5.77 (4.58–6.96) 9.54 (7.80–11.27)
 Low birthweight 22.80 (8.75–36.85) 13.91 (7.88–19.93)
 Not SGA 5.36 (4.26–6.46) 7.99 (6.49–9.49)
 SGA 22.52 (1.74–43.31) 18.96 (10.77–27.15)
  1. aLow birthweight models adjusted for maternal parity, infant sex, gestational age, maternal age, social economic factors (maternal education, housing tenure, means- tested benefits) and smoking; SGA models adjusted for maternal age, social economic factors (maternal education, housing tenure, means- tested benefits) and smoking