Table 3.
Multivariable association between risk factors and GAS pharyngitis, GAS carriage or GAS skin infection, adjusted for sociodemographic variables and all other risk factors included in the model.
| Risk factor | Units | GAS pharyngitisaOR (95%CI) | GAS carriersaOR (95%CI) | GAS positive skin aOR (95%CI) |
|---|---|---|---|---|
| Eczema | Yes/no | 1·5 (0·9-2·5) | 0·8 (0·4-1·4) | 3·9 (2·2-6·9) |
| Barriers to accessing primary health care | Barriers versus no barriers | 3·3 (1·8-6·0) | 2·9 (1·5-6·0) | 3·5 (1·6-7·6) |
| Grandparents with any Māori or Pacific ethnicity | 4 versus 0,1,2,3 | 1·5 (0·8-3·0) | 1·3 (0·7-2·7) | 3·0 (1·2-7·7) |
| Family history of ARF (blood relative) | Yes/no | 1·5 (0·8-2·8) | 1·4 (0·7-2·7) | 2·2 (1·1-4·3) |
| Structural household crowding (American Crowding Index) | Crowded versus uncrowded | 1·5 (0·9-2·4) | 1·6 (1·0-2·8) | 1·9 (1·0-3·4) |
| Exposure to damp and mould in the home | Damp/mould versus none | 1·4 (0·7-2·7) | 1·1 (0·7-1·9) | 1·3 (0·7-2·3) |
| Number of vegetables per day | None versus 1+ | 1·4 (0·7-2·7) | 1·8 (0·9-3·4) | 1·6 (0·8-3·3) |
| Bed sharing | ≥1 versus no one | 1·3 (0·8-2·3) | 1·3 (0·8-2·2) | 1·4 (0·8-2·6) |
| General health | Poor/fair versus Good/very good/excellent | 1·2 (0·3-4·5) | 2·2 (0·6-8·0) | 1·6 (0·4-6·9) |
aOR are controlled for all listed risk factors, age, sex, ethnicity, and NZiDep.