Outcomes | Birth weight <3.2 kg n=104 890 (1554 events) | Birth weight ≥3.2 kg n=149 280 (2083 events) | P value between group difference |
Incident AMI, within-group effects | 0.85 (0.76 to 0.95) p=0.005 | 1.01 (0.91 to 1.13) p=0.80 | p=0.02 |
Incident AMI, between-group effects | 1.15 (1.08 to 1.22) | 1.00 | p=6.0×10−5 |
Models adjusted for age, sex, social deprivation, maternal diabetes, maternal hypertension, maternal smoking and paternal diabetes. Results are subdistribution HRs per 1 kg increase in birth weight with corresponding 95% CIs. Significance level is set at p<0.025 for within-group and p<0.05 for between-group effects.