Table 3 CATI versus Diary responses: Laundry
From: Collecting household water usage data: telephone questionnaire or diary?
Statistic | Number of washing machine loads per week | CATI response relative | |
|---|---|---|---|
| Â | CATI response (Median 95% confidence limit) | Diary response (Median 95% confidence limit) | to Diary weighted kappa (agreement*) |
Average | 5.3 | 6.7 | Â |
Standard deviation | 3.1 | 3.7 | Â |
Median | 5 (4 - 5) | 6 (5.5 - 7) | 0.66 (fair to good) |
N | 217 | 217 | Â |