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Intra-class correlation coefficients for sanitary risk scores based on five surveyors’ observations over two visits to water sources
| Source type | No. of source visits | Intra-class correlation (95% confidence limits) |
|---|---|---|
| Surface water | 47 | 0.24 (0.12 to 0.39) |
| Rainwater | 51 | 0.12 (0.02 to 0.26) |
| Protected wells | 17 | 0.44 (0.22 to 0.68) |
| All sources | 129 | 0.49 (0.33 to 0.62) |
