Results of logistic regression models of water distribution zone grade, and NZDep96 index of socioeconomic deprivation, by urban-rural status
| Variable | OR* | SE | p Value | 95% CI | |
|---|---|---|---|---|---|
| *Odds ratios (OR) are defined as the ratio of A:B where A is the odds of water supplies being high risk in a given decile of NZDep96 and B is the odds of water supplies being high risk in the least deprived decile. | |||||
| Model 1: Urban | |||||
| 1 | 1.00 | – | – | – | – |
| 2 | 1.14 | 0.17 | 0.39 | 0.85 | 1.53 |
| 3 | 1.90 | 0.26 | <0.001 | 1.45 | 2.50 |
| 4 | 2.48 | 0.33 | <0.001 | 1.91 | 3.23 |
| 5 | 2.60 | 0.34 | <0.001 | 2.01 | 3.36 |
| 6 | 3.49 | 0.44 | <0.001 | 2.72 | 4.47 |
| 7 | 3.16 | 0.40 | <0.001 | 2.47 | 4.04 |
| 8 | 3.89 | 0.48 | <0.001 | 3.06 | 4.95 |
| 9 | 4.01 | 0.49 | <0.001 | 3.15 | 5.10 |
| 10 | 3.76 | 0.46 | <0.001 | 2.95 | 4.78 |
| Model 2: Rural | |||||
| 1 | 1.00 | – | – | – | – |
| 2 | 1.67 | 0.21 | <0.001 | 1.30 | 2.15 |
| 3 | 2.34 | 0.29 | <0.001 | 1.83 | 2.99 |
| 4 | 2.53 | 0.32 | <0.001 | 1.98 | 3.23 |
| 5 | 2.31 | 0.29 | <0.001 | 1.80 | 2.96 |
| 6 | 2.33 | 0.31 | <0.001 | 1.79 | 3.02 |
| 7 | 2.45 | 0.32 | <0.001 | 1.90 | 3.17 |
| 8 | 2.65 | 0.35 | <0.001 | 2.05 | 3.43 |
| 9 | 2.09 | 0.30 | <0.001 | 1.59 | 2.76 |
| 10 | 1.72 | 0.24 | <0.001 | 1.30 | 2.27 |