Table 2

Unadjusted and adjusted OR (95% CI) showing associations for study year and underweight, overweight, and obesity versus normal weight in the combined dataset

	Unadjusted	Adjusted‡					p value for trend with BMI SDS
	Year	Year	Body mass index
	2000† v 1989	2000† v 1989	Underweight	Normal	Overweight	Obese
*Meets the Holm’s criterion for significance (adjusting for eight comparisons) at the 5% level.²²
**Meets the Holm’s criterion for significance (adjusting for eight comparisons) at the 1% level.²²
†2000 data restricted to children in their 12th year.
‡Adjusted for body mass index (obese, overweight, underweight v normal), ethnicity (Maori, Polynesian, other v European) and sex.
Wheeze ever	2.28 (1.87 to 2.79)**	2.29 (1.85 to 2.83)**	1.01 (0.63 to 1.62)	1.00	1.25 (0.96 to 1.64)	1.26 (0.82 to 1.93)	0.03
Wheeze last 12 months	1.41 (1.12 to 1.78)**	1.33 (1.04 to 1.70)	0.77 (0.42 to 1.38)	1.00	1.36 (1.00 to 1.84)	1.69 (1.06 to 2.69)	0.002*
Wheeze with exercise	1.80 (1.41 to 2.29)**	1.72 (1.34 to 2.22)**	0.81 (0.44 to 1.50)	1.00	1.22 (0.89 to 1.67)	1.76 (1.11 to 2.80)	0.003*
Asthma ever	2.90 (2.32 to 3.62)**	2.88 (2.28 to 3.64)**	1.17 (0.69 to 1.96)	1.00	1.08 (0.81 to 1.44)	1.39 (0.90 to 2.17)	0.08
Hospital admission ever	1.66 (1.22 to 2.25)**	1.61 (1.17 to 2.23)	1.08 (0.50 to 2.31)	1.00	1.08 (0.72 to 1.60)	1.18 (0.66 to 2.12)	0.98
Inhaled steroid or cromoglycate in last 12 months	3.29 (2.34 to 4.63)**	3.20 (2.24 to 4.68)**	1.33 (0.64 to 2.78)	1.00	1.23 (0.83 to 1.83)	2.33 (1.38 to 3.94)	0.002*
Any medication in last 12 months	2.30 (1.79 to 2.96)**	2.20 (1.70 to 2.85)**	0.95 (0.52 to 1.72)	1.00	1.08 (0.79 to 1.50)	1.82 (1.15 to 2.89)	0.005*
BHR to exercise	0.70 (0.52 to 0.95)*	0.71 (0.51 to 0.97)	1.28 (0.69 to 2.39)	1.00	1.21 (0.81 to 1.83)	0.93 (0.45 to 1.93)	0.90