Table 1 Effect of type of milk and the introduction of solids on hospitalisation for diarrhoea and LRTI in the period between birth and age 8 months
Milk and solid feeding during a given monthNo. of infant-monthsMonthly risk*of diarrhoea(no. of events)Adjusted OR for diarrhoea†(95% CI)Monthly risk*of LRTI(no. of events)Adjusted OR for LRTI†(95% CI)
Milk group (this month)
    Formula only91 8420.18 (176)10.49 (479)1
    Breast+formula12 5160.09 (10)0.74 (0.35 to 1.55)0.25 (32)0.73 (0.48 to 1.13)
    Breast milk only23 4400.05 (13)0.39 (0.20 to 0.77)0.28 (72)0.65 (0.47 to 0.89)
Solids (this month)
    No45 2700.11 (57)10.46 (222)1
    Yes82 5120.17 (142)1.39 (0.75 to 2.59)0.41 (361)1.14 (0.76 to 1.70)
  • *Monthly percentage risk; this is weighted and therefore does not equal 100×(no. of events/no. of infant-months); †for diarrhoea, odds ratios are adjusted for milk group, solids, baby’s age, mother’s age at delivery, mode of delivery and mother’s education; for LRTI, odds ratios are adjusted for milk group, solids, baby’s age, baby’s sex, mother’s age at delivery, mode of delivery, household income, whether the baby was first born, mother’s (current) smoking status and family history of asthma.

  • LRTI, lower respiratory tract infection; OR, odds ratio.