Table A1.
Univariable associations between reported delivery and aesthetic conditions and measured water quality in a sample of households of three rural counties in Alabama 2012.
| Reported delivery and aesthetic conditions | Presence of total coliforms in kitchen samples OR (95%CI) |
Presence of total coliforms in outside samples OR (95%CI) |
Presence of free chlorine OR (95%CI) |
Presence of total chlorine OR (95%CI) |
Turbidity > 0.3 NTU OR (95%CI) |
Log-transformed Pressure Quintiles * OR (95% CI) |
|---|---|---|---|---|---|---|
| Intermittent Service | 1.12 (0.64–1.95) | 0.92 (0.54–1.56) | 2.25 (0.53–9.63) | 0.81 (0.17–3.76) | 1.36 (0.93–1.99) | 0.89 (0.59–1.34) ‡ |
| Low Water Pressure | 0.89 (0.58–1.37) | 0.71 (0.49–1.06) | 1.04 (0.49–2.21) | 2.94 (0.63–13.34) | 0.78 (0.59–1.04) | 1.43 (1.10–1.85) |
| Objectionable Taste | 0.75 (0.44–1.26) | 0.85 (0.54–1.34) | 1.00 (0.42–2.37) | 0.42 (0.13–1.33) | 0.98 (0.70–1.36) | 1.11 (0.82–1.49) |
| Objectionable Odor | 1.00 (0.59–1.70) | 1.11 (0.70–1.76) | 0.94 (0.38–2.33) | 0.31 (0.10–0.99) | 1.02 (0.72–1.46) | 0.95 (0.68–1.32) |
| Objectionable Color | 1.41 (0.86–2.31) | 1.27 (0.81–2.01) | 1.46 (0.50–4.24) | 1.07 (0.23–4.93) | 0.78 (0.54–1.12) | 0.97 (0.70–1.35) |
Note: * Ordinal logistic regression performed on quintiles of log-transformed pressure. Odds ratios derived from modeling the probability of being in a lower level of pressure are reported; ‡ Logistic regression performed on binary pressure when proportional odds assumption was not met; Statistically significant results in bold.