Comparison of FAC after treating with WaterGuard or Aquatabs and the corresponding p values and 95% CI (detection limit = 0.01 mg/L)
| Indicator variables . | WG: Coefficient (95% CI) . | p values . | AQ: Coefficient (95% CI) . | p values . |
|---|---|---|---|---|
| Container | ||||
| Clay pot | 1 | 0.818 | 1 | 0.128 |
| Bucket | 0.03 (−0.01,0.07) | −0.02 (−0.04,0.01) | ||
| Time | ||||
| 30 min | 1 | < 0.001 | 1 | < 0.001 |
| 24 h | −0.27 (−0.35,− 0.19) | −0.41 (−0.55,− 0.30) | ||
| Dose | ||||
| Single dose | 1 | < 0.001 | 1 | < 0.001 |
| Double dose | 0.31 (0.20,0.42) | 0.46 (0.32,0.60) | ||
| NTU categories | ||||
| 1–5 | 1 | 1 | < 0.001 | |
| 6–10 | −0.25 (−0.41, − 0.09) | < 0.001 | −0.11 (−0.49,0.25) | |
| 11–20 | −0.61 (−1.06, − 0.18) | −0.40 (−0.86,0.61) | ||
| 21–30 | −1.09 (−1.17, − 1.00) | −0.92 (−1.29,− 0.55) | ||
| 31–50 | −1.15 (−1.41, − 0.89) | −0.94 (−1.52, − 0.55) | ||
| 51–100 | −1.23 (−1.30, − 1.16) | −0.96 (−1.34, − 0.59) | ||
| >100 | −1.40 (−1.45, − 1.34) | −1.34 (−1.70, − 0.97) | ||
| Random effects | SD(T) = 0.15 SD(ε) = 0.29 | SD(T) = 0.25 SD(ε) = 0.36 | ||
| Indicator variables . | WG: Coefficient (95% CI) . | p values . | AQ: Coefficient (95% CI) . | p values . |
|---|---|---|---|---|
| Container | ||||
| Clay pot | 1 | 0.818 | 1 | 0.128 |
| Bucket | 0.03 (−0.01,0.07) | −0.02 (−0.04,0.01) | ||
| Time | ||||
| 30 min | 1 | < 0.001 | 1 | < 0.001 |
| 24 h | −0.27 (−0.35,− 0.19) | −0.41 (−0.55,− 0.30) | ||
| Dose | ||||
| Single dose | 1 | < 0.001 | 1 | < 0.001 |
| Double dose | 0.31 (0.20,0.42) | 0.46 (0.32,0.60) | ||
| NTU categories | ||||
| 1–5 | 1 | 1 | < 0.001 | |
| 6–10 | −0.25 (−0.41, − 0.09) | < 0.001 | −0.11 (−0.49,0.25) | |
| 11–20 | −0.61 (−1.06, − 0.18) | −0.40 (−0.86,0.61) | ||
| 21–30 | −1.09 (−1.17, − 1.00) | −0.92 (−1.29,− 0.55) | ||
| 31–50 | −1.15 (−1.41, − 0.89) | −0.94 (−1.52, − 0.55) | ||
| 51–100 | −1.23 (−1.30, − 1.16) | −0.96 (−1.34, − 0.59) | ||
| >100 | −1.40 (−1.45, − 1.34) | −1.34 (−1.70, − 0.97) | ||
| Random effects | SD(T) = 0.15 SD(ε) = 0.29 | SD(T) = 0.25 SD(ε) = 0.36 | ||
NTU = nephelometric turbidity units; WG = WaterGuard liquid; AQ = Aquatabs; FAC = free available chlorine; SD = estimates of the standard deviation of the random effects terms and of the error terms.