Table 1.
Personal characteristics of smoking households with infants. Values are numbers (percentages) of households unless stated otherwise
| Characteristics | Households (n=314) |
|---|---|
| Parent's age (years): | |
| ≤24 | 100 (32) |
| ≥25 | 214 (68) |
| Status: | |
| Living with partner | 267 (85) |
| Not living with partner | 47 (15) |
| No of children: | |
| 1-3 | 267 (85) |
| ≥4 | 47 (15) |
| Self reported ethnic group: | |
| White (United Kingdom or European) | 256 (82) |
| Other | 58 (18) |
| Tenure: | |
| Owner occupied | 148 (47) |
| Rented or other | 166 (53) |
| Parent's educational achievement: | |
| No qualifications | 72 (23) |
| Qualifications | 242 (77) |
| No of rooms per person: | |
| ≤1 | 103 (33) |
| >1 | 204 (65) |
| Missing data | 7 (2) |
| Social class of household: | |
| Non-manual | 70 (22) |
| Manual | 131 (42) |
| Part time worker | 14 (4.5) |
| Unemployed | 97 (31) |
| Missing data | 2 (0.5) |
| Total household income per annum: | |
| <£10 000 | 148 (47) |
| ≥£10 000 | 166 (53) |
| Mean age of infants studied | 12 weeks |
| Mean (SD) cotinine to creatinine ratio (ng/ml:mmol/l); range (n=216) | 30.3 (73.0); 1-726 |