Estimates of the risk (odds ratio) of getting a “low” WPPSI-R score at age 5 years among children breast fed for less than 3 months compared to children breast fed for six months or more, adjusted for maternal age, education, smoking, and Raven score
| n | OR (95% CI) | ||||
|---|---|---|---|---|---|
| Total IQ | Verbal IQ | Performance IQ | |||
| Breast feeding alone | 231 | 2.8 (1.4–5.3) | 1.4 (0.7–2.6) | 2.2 (1.1–4.1) | |
| Breast feeding + age | 228 | 1.6 (1.1–2.2) | 1.1 (0.8–1.5) | 1.5 (1.1–2.1) | |
| Breast feeding + education | 230 | 1.6 (1.1–2.3) | 1.1 (0.8–1.5) | 1.4 (1.0–2.0) | |
| Breast feeding + smoking | 231 | 1.6 (1.2–2.3) | 1.1 (0.8–1.6) | 1.4 (1.0–2.0) | |
| Breast feeding + Raven score | 192 | 1.5 (1.0–2.1) | 1.0 (0.7–1.5) | 1.2 (0.8–1.7) | |