Table 6– Association between neonatal lung function, compliance (C_rs) and resistance (R_rs) of respiratory system, and asthma, defined in two different ways

Risk factor	Subjects n/N	OR (95% CI)	p-value
Asthma^#	81/549
C_rs mL·kPa⁻¹ per 10^¶		0.66 (0.49–0.88)	0.004
R_rs kPa·L⁻¹·s^−1¶		0.99 (0.88–1.12)	0.874
Asthma⁺	42/298
C_rs mL·kPa⁻¹ per 10^¶		0.60 (0.40–0.89)	0.011
R_rs kPa·L⁻¹·s^−1¶		1.01 (0.86–1.19)	0.905

^#: definition based only primary care consultations, prescriptions and/or referral for wheezing illnesses; ^¶: standardised according to sex, age, weight and length at measurement, and adjusted for maternal smoke exposure during pregnancy, parental allergy, siblings, daycare visits during the first 6 months of life, maternal age at birth >30 years, maternal education and ethnicity of the mother; ⁺: definition also based on patient reported symptoms and lung function at the age of 5 years.