Study population (n = 1826) according to sociodemographic factors and crying behaviour
| n | % | |
|---|---|---|
| Sociodemographic characteristics | ||
| Sex | ||
| Female | 861 | 47.2 |
| Male | 965 | 52.8 |
| Parity | ||
| Second and later born children | 888 | 48.6 |
| First born children | 938 | 51.4 |
| Ethnic origin | ||
| Dutch | 989 | 54.2 |
| Surinamese | 246 | 13.5 |
| Turkish | 100 | 5.5 |
| Moroccan | 190 | 10.4 |
| Other | 301 | 16.5 |
| Education of the mother | ||
| High | 1009 | 55.3 |
| Poor | 817 | 44.7 |
| Type of feeding | ||
| Breast | 657 | 36.0 |
| Formula | 832 | 45.6 |
| Mixed | 337 | 18.5 |
| Crying behaviour | ||
| Crying for three or more hours per 24 hour day | ||
| No | 1687 | 92.4 |
| Yes | 139 | 7.6 |
| Crying a lot | ||
| No | 1571 | 86.0 |
| Yes | 255 | 14.0 |
| Difficult to comfort | ||
| No | 1638 | 89.7 |
| Yes | 188 | 10.3 |