Table 4

Cost of infant health service in relation to maternal early-pregnancy BMI by time period (£/12 months)*

Time frameBMI 18.5–24.9BMI 25–29.9BMI≥30
Mean (SD)Mean (SD)Rate ratio* (95% CI)Mean (SD)Rate ratio* (95% CI)
0–7 days242.84 (1236.7)147.7 (594.9)0.61 (0.60 to 0.62)664.1 (2958.9)2.74 (2.7 to 2.76)
1 week to 6 months927.0 (1609.8)1159.1 (1737.4)1.25 (1.24 to 1.26)1492.6 (3040.5)1.61 (1.60 to 1.62)
6–12 months405.66 (809.2)333.2 (389.9)0.82 (0.81 to 0.83)555.3 (1378.2)1.37 (1.36 to 1.38)
  • *Based on inpatient, outpatient and general practice costs (including prescriptions).

  • BMI, body mass index.