Characteristics of the men in the cohort subdivided by how they had been fed as infants
| Not breast fed | Any breast feeding (significance*) | Duration of breast feeding | ||||
|---|---|---|---|---|---|---|
| Unknown | Under 3 months | 3 months or more | Significance of trend† | |||
| *Significance of difference between proportions assessed by χ2 significance of differences between means assessed in an analysis of variance. | ||||||
| Numbers of men | 186 | 593 | 222 | 125 | 246 | |
| Manual work | 62% | 60% (p = 0.62) | 66% | 60% | 55% | p = 0.32 |
| Education | ||||||
| Primary only | 43% | 47% | 49% | 45% | 45% | |
| A higher level | 20% | 24% (p = 0.14) | 22% | 22% | 26% | p = 0.37 |
| Birth order | ||||||
| First | 41% | 34% | 30% | 41% | 34% | p = 0.46 |
| Fourth or later | 22% | 26% (p = 0.08) | 33% | 20% | 23% | |
| Family size over four children | 46% | 59% (p = 0.002) | 61% | 57% | 57% | p <0.04 |
| Mean birth weight (kg) | 3.35 | 3.75 (p = 0.0005) | 3.76 | 3.65 | 3.79 | p<0.0005 |
| Leisure activity (kJ/day) | 0.53 | 0.59 (p = 0.25) | 0.57 | 0.62 | 0.58 | p = 0.36 |
| Smoking | ||||||
| Non-smoker | 22% | 19% | 18% | 17% | 20% | |
| Ex smoker | 42% | 50% | 48% | 48% | 53% | p = 0.20 |
| Current | 35% | 31% (p = 0.20) | 34% | 34% | 27% | |
| Father | ||||||
| Manual | 91% | 87% (p = 0.22) | 84% | 88% | 90% | p = 0.78 |
| Unemployed for one year or more | 40% | 45% (p = 0.16) | 45% | 40% | 45% | p = 0.50 |