Cost of infant health service in relation to maternal early-pregnancy BMI by time period (£/12 months)*
| Time frame | BMI 18.5–24.9 | BMI 25–29.9 | BMI≥30 | ||
|---|---|---|---|---|---|
| Mean (SD) | Mean (SD) | Rate ratio* (95% CI) | Mean (SD) | Rate ratio* (95% CI) | |
| 0–7 days | 242.84 (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 months | 927.0 (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 months | 405.66 (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.