Table 1

Prevalence of caffeine consumption in four strata during and after pregnancy in SIDS cases and controls with crude and adjusted odds ratios (ORs) in Scandinavia 1992–95, the Nordic epidemiological SIDS study

Caffeine consumptionCasesControlsCrudeAdjusted for smoking in 1st trimesterAdjusted for maternal age, education, parity, and smoking in 1st trimester
OR95% CIp ValueOR95% CIp ValueOR95% CIp Value
During pregnancy
Nil341601.0RefRef1.0RefRef1.0RefRef
 1–400 mg/24 h1024650.90.6 to 1.50.740.90.6 to 1.50.701.10.6 to 1.90.79
 401–800 mg/24 h571192.01.2 to 3.40.0091.20.7 to 2.20.461.50.8 to 3.00.20
 > 800 mg/24 h24243.91.9 to 8.1< 0.0011.70.8 to 3.80.192.51.0 to 6.70.06
After pregnancy
Nil281091.0RefRef1.0RefRef1.0RefRef
 1–400 mg/24 h984780.70.4 to 1.20.160.70.4 to 1.20.120.90.5 to 1.50.60
 401–800 mg/24 h591581.20.7 to 2.10.450.90.5 to 1.60.201.00.5 to 2.00.91
 > 800 mg/24 h30303.11.5 to 6.30.0021.40.6 to 3.10.622.00.8 to 5.20.14
  • CI, confidence interval.