Skip to main content

Table 2 CATI versus Diary responses: Garden irrigation

From: Collecting household water usage data: telephone questionnaire or diary?

Question CATI response
N = 219
Diary response
N = 219
CATI response relative to Diary
weighted kappa
(agreement*)
  Average
(standard deviation)
% using
(N)
Average (standard deviation) % using
(N)
 
Number of garden watering sessions last 7 days 1.7
(1.79)
72.2% (158) 2.9
(2.24)
86.3%
(189)
0.36
(poor)
Automatic watering system duration use (min) 38.0
(19.2)
15.5% (34) 55.4
(26.4)
11.9%
(26)
0.51
(fair to good)
Hand held hose duration use (min) 26.3
(16.9)
40.6% (89) 26.5
(32.7)
58.0% (127) 0.36
(poor)
Fixed manual system duration use (min) 45.3
(23.9)
17.4% (38) 43.2
(17.12)
12.8% (28) 0.21
(poor)
Hose and sprinkler duration use (min) 60.2
(24.8)
13.2% (29) 54.6
(33.5)
22.8% (50) 0.05
(poor)
  1. * Fleiss JL: Statistical methods for rates and proportions 2nd edition, New York; Wiley; 1981:218
\