Table 4.
Ratios and 95 % confidence intervals of observed to expected K-function outlet densities at distances from the least and most socially deprived schools, Christchurch, New Zealand, 1966–2006
| Distance from least deprived quintile of schools | Distance from most deprived quintile of schools | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 400 m | 800 m | 1200 m | 1600 m | 400 m | 800 m | 1200 m | 1600 m | |||||||||
| Food outlet category and year | Ratio | 95 % CI | Ratio | 95 % CI | Ratio | 95 % CI | Ratio | 95 % CI | Ratio | 95 % CI | Ratio | 95 % CI | Ratio | 95 % CI | Ratio | 95 % CI |
| Supermarkets/grocery stores | ||||||||||||||||
| 1966 | 1·2 | 1·1, 1·3 | 1·5 | 1·4, 1·5 | 1·5 | 1·4, 1·5 | 1·5 | 1·4, 1·5 | 2·7 | 0·9, 4·5 | 2·5 | 1·6, 3·4 | 2·3 | 1·6, 2·9 | 2·1 | 1·6, 2·5 |
| 1976 | 2·2 | 1·9, 2·5 | 2·0 | 1·9, 2·2 | 1·7 | 1·6, 1·8 | 1·6 | 1·5, 1·7 | 2·6 | 2·0, 3·1 | 2·0 | 1·7, 2·3 | 1·8 | 1·6, 2·0 | 1·7 | 1·5, 1·9 |
| 1986 | 2·0 | 1·9, 2·1 | 2·0 | 1·9, 2·1 | 1·7 | 1·6, 1·7 | 1·5 | 1·5, 1·6 | 2·8 | 1·2, 4·4 | 2·4 | 1·6, 3·2 | 1·9 | 1·3, 2·4 | 1·6 | 1·2, 2·1 |
| 1996 | 1·2 | 1·1, 1·3 | 1·6 | 1·6, 1·7 | 1·6 | 1·6, 1·7 | 1·6 | 1·6, 1·7 | 2·5 | 0·3, 4·7 | 2·1 | 0·9, 3·2 | 1·6 | 0·9, 2·4 | 1·4 | 0·8, 2·0 |
| 2006 | 0·3 | 0·2, 0·3 | 0·8 | 1·7, 1·8 | 1·9 | 1·8, 1·9 | 1·7 | 1·6, 1·7 | 2·1 | 0·4, 3·8 | 2·3 | 1·4, 3·1 | 2·1 | 1·5, 2·7 | 1·8 | 1·4, 2·3 |
| Fish shops/fast-food outlets | ||||||||||||||||
| 1966 | 1·1 | 1·0, 1·1 | 1·8 | 1·8, 1·8 | 1·8 | 1·8, 1·8 | 1·7 | 1·7, 1·7 | 3·0 | 2·8, 3·1 | 2·4 | 2·3, 2·4 | 2·1 | 2·0, 2·1 | 2·0 | 2·0, 2·0 |
| 1976 | 0·9 | 0·9, 1·0 | 1·7 | 1·6, 1·7 | 1·8 | 1·7, 1·8 | 1·6 | 1·6, 1·6 | 3·3 | 3·1, 3·6 | 2·5 | 2·4, 2·6 | 2·0 | 1·9, 2·1 | 2·0 | 2·0, 2·1 |
| 1986 | 0·9 | 0·8, 0·9 | 1·8 | 1·8, 1·8 | 1·8 | 1·7, 1·8 | 1·6 | 1·6, 1·7 | 4·0 | 3·9, 4·2 | 2·6 | 2·5, 2·7 | 1·9 | 1·9, 2·0 | 1·9 | 1·8, 1·9 |
| 1996 | 0·6 | 0·5, 0·6 | 1·2 | 1·2, 1·2 | 1·4 | 1·4, 1·4 | 1·3 | 1·3, 1·3 | 3·7 | 3·5, 4·0 | 2·7 | 2·5, 2·8 | 2·1 | 2·0, 2·2 | 2·0 | 1·9, 2·1 |
| 2006 | 1·0 | 0·9, 1·1 | 0·7 | 1·3, 1·4 | 1·5 | 1·5, 1·6 | 1·5 | 1·5, 1·5 | 2·4 | 1·6, 3·3 | 2·2 | 1·8, 2·6 | 1·9 | 1·6, 2·2 | 1·8 | 1·6, 2·0 |
| Convenience/fruit & vegetable stores | ||||||||||||||||
| 1966 | 1·3 | 1·2, 1·4 | 1·9 | 1·8, 1·9 | 2·0 | 2·0, 2·0 | 1·9 | 1·9, 2·0 | 3·3 | 3·2, 3·5 | 2·3 | 2·3, 2·4 | 2·0 | 1·9, 2·1 | 2·0 | 1·9, 2·0 |
| 1976 | 2·1 | 1·9, 2·3 | 1·6 | 1·5, 1·7 | 1·8 | 1·7, 1·8 | 1·8 | 1·7, 1·8 | 2·6 | 2·4, 2·9 | 2·2 | 2·0, 2·3 | 2·0 | 1·9, 2·1 | 1·9 | 1·8, 2·0 |
| 1986 | 1·3 | 1·2, 1·4 | 1·5 | 1·4, 1·6 | 1·5 | 1·4, 1·5 | 1·5 | 1·5, 1·6 | 3·4 | 3·1, 3·8 | 2·5 | 2·3, 2·7 | 2·1 | 2·0, 2·2 | 2·0 | 1·9, 2·1 |
| 1996 | 1·0 | 0·9, 1·1 | 1·0 | 1·0, 1·1 | 1·2 | 1·2, 1·2 | 1·3 | 1·3, 1·3 | 2·6 | 2·5, 2·7 | 2·3 | 2·2, 2·4 | 2·0 | 1·9, 2·0 | 1·9 | 1·8, 1·9 |
| 2006 | 0·4 | 0·4, 0·4 | 0·7 | 1·1, 1·1 | 1·3 | 1·3, 1·4 | 1·4 | 1·4, 1·4 | 2·3 | 2·2, 2·4 | 2·0 | 1·9, 2·1 | 1·8 | 1·8, 1·9 | 1·7 | 1·7, 1·8 |