Table 2 Odds ratios from a logistic hierarchical stepwise regression model, predicting perceived drinking water safety from water supply and household characteristics (based on 26,076 households in the 2002 and 24,056 households in the 2008 general household survey)
Characteristic | 2008 | 2002 | ||||
|---|---|---|---|---|---|---|
Odds ratio | T statistic | P value | Odds ratio | T statistic | P value | |
Water clear | 10.44 | 11.49 | 0 | 22.60 | 13.4 | 0 |
Water tastes good | 14.08 | 15.58 | 0 | 8.24 | 9.19 | 0 |
Water free from odours | 2.47 | 5.15 | 0 | 4.07 | 6.15 | 0 |
Borehole | 0.35 | −3.48 | 0.001 | 0.20 | −6.07 | 0 |
Rainwater or tanker water | 0.24 | −4.44 | 0 | 0.13 | −6.3 | 0 |
Other non-piped water sources (i.e. wells, rivers, dams, springs, stream, etc.) | 0.25 | −6.5 | 0 | 0.10 | −9.23 | 0 |
Water clear and free from odours | 3.85 | 5.39 | 0 | 2.22 | 3.01 | 0.003 |
Clear water from other non-piped sources | 0.23 | −5.07 | 0 | 0.44 | −3.1 | 0.002 |
Water from other non-piped sources tastes good | 0.42 | −3.42 | 0.001 | 0.43 | −2.9 | 0.004 |
Water from other non-piped sources free from odours | 0.34 | −3.92 | 0 | |||
Head of household ethnicity - coloured | 3.70 | 3.39 | 0.001 | |||
Public or neighbour’s tap | 0.52 | −2.92 | 0.004 | |||