Table 4 CATI versus Diary responses: Toilet flushing
From: Collecting household water usage data: telephone questionnaire or diary?
Statistic | Total number of toilet flushes per household per week | CATI response relative to Diary | |
|---|---|---|---|
| Â | CATI response (Median 95% confidence limit) | Diary response (Median 95% confidence limit) | weighted kappa (agreement*) |
Average | 112.4 | 91.8 | Â |
Standard deviation | 60.5 | 40.1 | Â |
Median | 105 (96 - 112) | 85 (77 - 90) | 0.29 (poor) |
N | 216 | 216 | Â |