Table 4

Unadjusted and adjusted OR with 95% CIs for associations between breast feeding and dental caries between the ages of 30 and 66 months (nbaseline=43 113)

 Unadjusted modelAdjusted model*
OR (95% CI)OR (95% CI)
Never breast fed (reference) vs
At 30 months (n=39 631)
 Ever breast fed1.18 (0.99 to 1.41)1.23 (1.01 to 1.48)
At 42 months (n=38 486)
 Ever breast fed0.99 (0.88 to 1.11)1.04 (0.92 to 1.18)
At 54 months (n=36 881)
 Ever breast fed0.96 (0.87 to 1.06)1.00 (0.90 to 1.12)
At 66 months (n=35 547)
 Ever breast fed0.96 (0.87 to 1.05)1.03 (0.93 to 1.14)
Breast fed for less than 6 months (reference) vs
At 30 months (n=39 631)
 Breast fed for at least 6–7 months1.50 (1.38 to 1.62)1.68 (1.53 to 1.83)
At 42 months (n=38 486)
 Breast fed for at least 6–7 months1.18 (1.12 to 1.25)1.29 (1.21 to 1.36)
At 54 months (n=36 881)
 Breast fed for at least 6–7 months1.06 (1.01 to 1.11)1.11 (1.06 to 1.17)
At 66 months (n=35 547)
 Breast fed for at least 6–7 months1.01 (0.97 to 1.06)1.07 (1.02 to 1.12)
  • *Adjusted for birth weight, sex, parity, maternal age at delivery, maternal educational attainment, maternal smoking status, marital status at delivery, family, and region of birth and residence.