The Association between Birth Weight and Gestational Age and Asthma in 6-7- and 13-14-Year-Old Children
Table 3
(a) Odds ratios (95% confidence interval) for birth weight categories (reference category 2.5–3.5 kg) for symptoms of asthma, 6-7 yr. (b) Odds ratios (95% confidence interval) for birth weight categories (reference category 2.5–3.5 kg) for symptoms of asthma, 13-14 yr.
(a)
Symptoms
Gender
Birth weight (kg)
<1.5
1.5–2
2–2.5
<2.5
2.5–3.5
>3.5
Wheeze ever
Total
1.39 (0.43–4.49)
1.67 (0.87–3.22)
1.24 (0.88–1.76)
1.32 (0.97–1.80)
1.00
1.12 (0.91–1.38)
Male
1.14 (0.12–11.03)
3.90 (1.38–10.98)
1.42 (0.85–2.37)
1.66 (1.04–2.63)
1.00
1.17 (0.875–1.58)
Female
1.48 (0.38–5.79)
0.94 (0.37–2.37)
1.11 (0.690–1.780)
1.10 (0.72–1.67)
1.00
1.07 (0.80–1.44)
Wheeze in the past 12 months
Total
0.95 (0.24–3.70)
1.38 (0.61–3.10)
0.94 (0.67–1.45)
1.01 (0.68–1.48)
1.00
1.11 (0.85–1.45)
Male
0.74 (0.08–7.25)
3.90 (1.10–13.70)
1.15 (0.60–2.18)
1.39 (0.79–2.45)
1.00
1.17 (0.81–1.70)
Female
1.08 (0.19–6.01)
0.54 (0.15–1.96)
0.795 (0.44–1.44)
0.76 (0.45–1.31)
1.00
1.065 (0.725–1.565)
Severe asthma
Total
0.20 (0.02–1.84)
0.75 (0.20–2.835)
0.73 (0.22–2.42)
1.00
0.60 (0.25–1.43)
Male
0.02 (0.01–0.37)
0.09 (0.01–1.04)
0.08 (0.01–0.08)
1.00
0.12 (0.01–0.94)
Female
2.47 (0.300–20.25)
3.12 (0.38–25.54)
1.00
1.315 (0.42–4.125)
Asthma ever
Total
1.47 (0.19–11.46)
0.46 (0.18–1.16)
0.44 (0.19–1.04)
1.00
1.07 (0.725–1.58)
Male
0.57 (0.17–1.90)
0.47 (1.14–1.57)
1.00
1.280 (0.67–2.15)
Female
2.18 (0.27–17.82)
0.36 (0.85–1.53)
0.42 (0.13–1.40)
1.00
0.84 (0.45–1.545)
Wheeze during or after exercise in the past 12 months
Total
2.41 (0.53–10.99)
0.70 (0.36–1.38)
0.67 (0.36–1.25)
1.00
1.162 (0.83–1.63)
Male
4.21 (0.43–41.46)
0.91 (0.37–2.230)
0.88 (0.38–2.04)
1.00
1.245 (0.79–1.97)
Female
1.66 (0.20–13.40)
0.52 (0.18–1.49)
0.497 (0.19–1.28)
1.00
1.08 (0.66–1.78)
Night cough in the past 12 months
Total
1.92 (0.50–6.21)
1.00 (0.435–2.29)
1.35 (0.94–1.94)
1.32 (0.950–1.84)
1.00
1.09 (0.87–1.37)
Male
3.80 (0.53–27.30)
2.11 (0.69–6.43)
1.655 (1.00–2.730)
1.770 (1.12–2.80)
1.00
0.94 (0.69–1.285)
Female
1.35 (0.28–6.46)
0.450 (0.105–1.94)
1.10 (0.65–1.87)
1.00 (0.61–1.62)
1.00
1.30 (0.94–1.80)
Shows models that could not converge. Bold font shows significant OR.
(b)
Symptoms
Gender
Birth weight (kg)
<1.5
1.5–2
2–2.5
<2.5
2.5–3.5
>3.5
Wheeze ever
Total
1.00 (0.30–3.39)
1.23 (0.51–2.99)
1.645 (1.09–2.47)
1.52 (1.04–2.22)
1.00
1.09 (0.78–1.52)
Male
1.60 (0.45–5.75)
0.83 (0.19–3.67)
1.59 (0.895–2.83)
1.48 (0.87–2.50)
1.00
0.89 (0.57–1.41)
Female
1.66 (0.54–5.07)
1.72 (0.97–3.075)
1.58 (0.92–2.72)
1.00
1.37 (0.84–2.23)
Wheeze in the past 12 months
Total
1.17 (0.24–5.61)
1.265 (0.41–3.92)
1.62 (0.93–2.81)
1.52 (0.91–2.54)
1.00
1.05 (0.65–1.695)
Male
1.91 (0.35–10.37)
0.597 (0.07–4.975)
1.44 (0.685–3.05)
1.365 (0.68–2.73)
1.00
1.21 (0.65–2.24)
Female
1.935 (0.49–7.64)
1.87 (0.82–4.24)
1.74 (0.82–3.695)
1.00
0.85 (0.40–1.83)
Severe asthma
Total
0.47 (0.05–4.19)
2.275 (0.49–10.57)
1.96 (0.48–7.21)
1.00
1.43 (0.48–4.235)
Male
1.00
1.96 (0.37–10.42)
Female
0.15 (0.01–1.855)
1.21 (0.23–6.29)
1.00 (0.24–4.20)
1.00
1.15 (0.27–4.80)
Asthma ever
Total
2.98 (0.85–10.44)
0.58 (0.08–4.37)
1.66 (0.87–3.16)
1.61 (0.89–2.91)
1.00
1.42 (0.86–2.34)
Male
2.71 (0.58–12.695)
2.555 (1.21–5.39)
2.175 (1.07–4.41)
1.00
0.94 (0.48–1.86)
Female
3.47 (0.41–29.64)
1.42 (0.18–11.425)
0.56 (0.12–2.53)
0.87 (0.28–2.755)
1.00
2.44 (1.14–5.20)
Wheeze during or after exercise in the past 12 months
Total
1.32 (0.30–5.76)
1.30 (0.39–4.37)
1.46 (0.83–2.56)
1.42 (0.85–2.385)
1.00
1.27 (0.825–1.955)
Male
1.78 (0.39–8.12)
1.25 (0.58–2.71)
1.14 (0.555–2.32)
1.00
0.865 (0.48–1.55)
Female
3.29 (0.90–12.10)
1.85 (0.80–4.26)
1.93 (0.90–4.14)
1.00
2.10 (1.09–4.06)
Night cough in last 12 months
Total
1.69 (0.57–5.01)
1.55 (0.63–3.795)
1.83 (1.20–2.78)
1.77 (1.205–2.61)
1.00
1.46 (1.045–2.03)
Male
1.99 (0.55–7.195)
0.55 (0.07–4.20)
1.30 (0.67–2.51)
1.27 (0.70–2.31)
1.00
1.23 (0.78–1.95)
Female
1.08 (0.13–8.75)
2.555 (0.90–7.23)
2.40 (1.375–4.20)
2.33 (1.39–3.92)
1.00
1.73 (1.07–2.80)
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