Bayley Scales of Infant Development at 13 months and duration of breast feeding (BF)
| Duration of BF | ANOVA | ||||||
|---|---|---|---|---|---|---|---|
| <3 months | 3–6 | ⩾6 | Total | p value | p for trend | ||
| Number BF | 59 | 72 | 214 | 345 | |||
| MDI | 109.9 (13.1) | 114.3 (10.4) | 117.7 (11.7)2-150 | 115.7 (11.7) | <0.001 | <0.001 | |
| PDI | 103.4 (13.3) | 107.3 (14) | 107.9 (14.2) | 107.0 (14.1) | 0.093 | 0.044 | |
Results expressed as mean (SD).
↵2-150 Significantly different from <3 months (p < 0.001; Sheffé's test).
MDI, Mental Developmental Index; PDI, Psychomotor Developmental Index.