Table 1 Item content and parameters.
| Â | Estimates of the item parameters ( | ||||
|---|---|---|---|---|---|
Item description | Hot deck 1st run | Cold deck | Items never offered | Including tendency to respond | Mean 5 runs hot deck |
Running for more than 15 minutes (++) (2) | 3.77 (0.242) | 3.49 (0.238) | 3.71 (0.242) | 3.72 (-) | 3.76 (0.242) |
Going for a walk in the woods (2) | -1.17 (0.125) | -1.02 (0.120) | -1.15 (0.124) | -1.16 (-) | -1.16 (0.125) |
Running for less than 5 minutes (3) | 1.37 (0.135) | 1.26 (0.129) | 1.34 (0.135) | 1.34 (-) | 1.36 (0.135) |
Walking up a hill or high bridge (++) (3) | -2.54 (0.163) | -2.27 (0.156) | -2.50 (0.162) | -2.51 (-) | -2.53 (0.163) |
Lifting up a toddler (3) | -1.91 (0.140) | -1.69 (0.134) | -1.87 (0.139) | -1.88 (-) | -1.90 (0.140) |
Moving a bed or table (4) | -2.49 (0.160) | -2.20 (0.153) | -2.44 (0.160) | -2.44 (-) | -2.47 (0.160) |
Playing with a child on the floor (5) | -1.84 (0.137) | -1.62 (0.132) | -1.82 (0.138) | -1.83 (-) | -1.84 (0.138) |
Tightening a screw (+) (5) | -3.23 (0.204) | -2.82 (0.188) | -3.18 (0.204) | -3.18 (-) | -3.21 (0.204) |
Going shopping for clothes (++) (6) | -3.11 (0.195) | -2.69 (0.179) | -3.05 (0.195) | -3.06 (-) | -3.10 (0.195) |
Change a light bulb in a ceiling lamp (7) | -1.57 (0.131) | -1.37 (0.126) | -1.59 (0.132) | -1.59 (-) | -1.59 (0.132) |
Mopping the floor (++) (11) | -3.56 (0.231) | -2.89 (0.193) | -3.55 (0.236) | -3.55 (-) | -3.56 (0.233) |
Putting the rubbish out (12) | -3.45 (0.222) | -2.82 (0.188) | -3.47 (0.231) | -3.47 (-) | -3.47 (0.224) |
Lifting a box weighting 10 kg (13) | -1.37 (0.128) | -1.11 (0.121) | -1.35 (0.129) | -1.36 (-) | -1.36 (0.128) |
Shopping for groceries for a week (13) | 0.03 (0.120) | 0.15 (0.115) | 0.03 (0.122) | 0.03 (-) | 0.01 (0.120) |
Painting a ceiling (14) | 1.21 (0.132) | 1.17 (0.127) | 1.18 (0.134) | 1.19 (-) | 1.19 (0.132) |
Cleaning a bathroom (17) | -1.99 (0.142) | -1.57 (0.131) | -1.98 (0.144) | -1.99 (-) | -2.00 (0.142) |
Carrying a heavy bag upstairs (17) | -0.53 (0.120) | -0.31 (0.114) | -0.47 (0.122) | -0.48 (-) | -0.49 (0.121) |
Painting a wall (18) | -0.29 (0.120) | -0.08 (0.114) | -0.25 (0.122) | -0.25 (-) | -0.26 (0.120) |
Cycling for 15 minutes (24) | -1.84 (0.137) | -1.38 (0.126) | -1.85 (0.142) | -1.86 (-) | -1.89 (0.140) |
Change sheets and duvet cover on bed (25) | -2.20 (0.149) | -1.58 (0.131) | -2.16 (0.151) | -2.17 (-) | -2.19 (0.150) |
Caring for potted plants on a balcony (25) | -1.65 (0.133) | -1.20 (0.122) | -1.62 (0.137) | -1.62 (-) | -1.63 (0.134) |
Vacuuming a flight of stairs (26) | -1.40 (0.128) | -1.02 (0.120) | -1.43 (0.133) | -1.43 (-) | -1.44 (0.130) |
Washing a window from the outside (27) | -1.30 (0.127) | -0.84 (0.117) | -1.24 (0.129) | -1.25 (-) | -1.27 (0.126) |
Cycling with a heavy load of shopping (30) | -0.74 (0.121) | -0.41 (0.114) | -0.77 (0.125) | -0.77 (-) | -0.76 (0.122) |
Pumping up a bicycle tyre (33) | -3.00 (0.188) | -2.02 (0.145) | -2.98 (0.199) | -2.99 (-) | -3.03 (0.193) |
Travelling by plane (38) | -2.14 (0.147) | -1.38 (0.126) | -2.10 (0.153) | -2.10 (-) | -2.11 (0.149) |
Mopping a flight of stairs (39) | -2.16 (0.147) | -1.38 (0.126) | -2.11 (0.154) | -2.12 (-) | -2.13 (0.147) |
Vacuuming the inside of a car (48) | -1.97 (0.141) | -1.15 (0.122) | -1.92 (0.151) | -1.92 (-) | -1.95 (0.142) |
Swimming for an hour (+) (54) | -1.25 (0.126) | -0.56 (0.115) | -1.19 (0.134) | -1.20 (-) | -1.18 (0.129) |
Washing a car (82) | -1.16 (0.125) | -0.37 (0.114) | -1.22 (0.143) | -1.22 (-) | -1.23 (0.131) |
Mowing the lawn (102) | -0.68 (0.121) | 0.19 (0.115) | -0.67 (0.140) | -0.67 (-) | -0.71 (0.122) |
Repairing a puncture in bicycle tyre (133) | -1.25 (0.126) | 0.08 (0.114) | -1.22 (0.156) | -1.23 (-) | -1.25 (0.127) |
Cronbach's alpha coefficient for scale | 0.87 | 0.84 | 0.81 | 0.81 | 0.87 |
)