Table 2. GPS—sensed visits using travel diary, GPS, and brand names.
| Fast food | Supermarkets | |||
|---|---|---|---|---|
| Number of visits (%) | Number of participants with ≥ 1 reported visits (%) | Number of visits (%) | Number of participants with ≥ 1 reported visits (%) | |
| Total number (reported visits and participants) | ||||
| n | 273 (100) | 150 (100) | 1102 (100) | 393 (100) |
| Visits with temporal-spatial matchesa | ||||
| No time tolerance | 178 (65.2) | 112 (74.67) | 822 (74.59) | 341 (86.77) |
| +/- 10 min | 217 (79.49) | 127 (84.67) | 894 (81.13) | 353 (89.82) |
| +/- 30 min | 231 (84.62) | 134 (89.33) | 918 (83.3) | 357 (90.84) |
| GPS—sensed visitsb | ||||
| No time tolerance | 175 (64.1) | 109 (72.67) | 804 (72.96) | 338 (86.01) |
| +/- 10 min | 211 (77.29)c | 124 (82.67) | 866 (78.58)e | 349 (88.8) |
| +/- 30 min | 223 (81.68)d | 130 (86.67) | 885 (80.31)f | 354 (90.08) |
(a) > one GPS point inside time window and inside a GIS food place parcel.
(b) (a) above + brand name of food establishment in parcel GIS matches that in travel log.
(c) Three visits had two matches each.
(d) Seven visits had two matches each.
(e) One visit had two matches.
(f) Two visits had two matches each.