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. 2021 Jan;146:106217. doi: 10.1016/j.envint.2020.106217

Table 3.

Selected time-activity characteristics by weekday and weekend household visit in warm and cool season.


Warm season


Cool season


Characteristics assessed in the day recalled Weekday (n = 450) Weekend (n = 448) Overall (n = 898) Weekday (n = 449) Weekend (n = 448) Overall (n = 897)
Hours spent at different locations or activities, median (IQR)*
 At home 20.3 (16.2–23.3) 20.2 (16.5–23.6) 20.3 (16.5–23.5) 21.5 (18.3–24.0) 21.0 (18.3–24.0) 21.3 (18.3–24.0)
 Indoors 21.5 (18.0–23.8) 21.8 (19.0–24.0) 21.7 (18.5–24.0) 23.0 (20.5–24.0) 23.0 (20.0–24.0) 23.0 (20.0–24.0)
 Roadside 2.0 (1.0–4.0) 2.0 (1.0–4.0) 2.0 (1.0–4.0) 2.0 (1.0–3.7) 1.8 (1.0–3.0) 2.0 (1.0–3.3)
 Cooking 1.6 (1.0–2.3) 1.8 (1.0–2.5) 1.7 (1.0–2.5) 2.5 (1.5–3.0) 2.5 (1.8–3.0) 2.5 (1.7–3.0)
 Heating NA 24.2 (24.0–24.5) 24.2 (24.0–24.5) 24.0 (24.0–24.5) 24.0 (24.0–24.5) 24.0 (24.0–24.5)
Cooking frequency, n (%)
 0 121 (26.9) 123 (27.5) 244 (27.2) 89 (19.8) 83 (18.5) 172 (19.2)
 Once 82 (18.2) 59 (13.2) 141 (15.7) 33 (7.4) 36 (8.0) 69 (7.7)
 2 times 139 (30.9) 152 (33.9) 291 (32.4) 117 (26.1) 111 (24.8) 228 (25.4)
 ≥ 3 times 108 (24.0) 114 (25.5) 222 (24.7) 210 (46.8) 218 (48.7) 428 (47.7)
Smoking frequency, n (%)
 0 406 (90.2) 402 (89.7) 808 (90.0) 402 (89.5) 403 (90.0) 805 (89.7)
 1–5 times 23 (5.1) 28 (6.3) 51 (5.7) 31 (6.9) 28 (6.3) 59 (6.6)
 ≥ 6 times 21 (4.7) 18 (4.0) 39 (4.3) 16 (3.6) 17 (3.8) 33 (3.7)
ETS exposure frequency, n (%)
 0 383 (85.1) 371 (82.8) 754 (84.0) 380 (84.6) 388 (86.6) 768 (85.6)
 1–4 times 43 (9.6) 54 (12.1) 97 (10.8) 37 (8.2) 39 (8.7) 76 (8.5)
 ≥ 5 times 24 (5.3) 23 (5.1) 47 (5.2) 32 (7.1) 21 (4.7) 53 (5.9)
PATS+CO compliance*
Duration wearing PATS+CO - hours, median (IQR) 12.0 (9.3–14.2) 13.0 (10.2–15.0) 12.5 (9.5–14.7) 12.0 (9.9–14.0) 13.2 (11.0–15.0) 12.5 (10.2–14.5)
% of awake time wearing PATS+CO, median (IQR) 79.0 (60.4–93.5) 86.7 (49.3–100) 81.8 (56.7–100) 80.8 (61.8–93.3) 86.4 (57.1–100) 83.0 (60.0–100)
*

Median (inter-quartile range [IQR]) only among those who reported activities in relevant locations or practised the activity during the designated recall period.

Median frequency in those who have smoked at least once during the day of assessment = 5 times.

ETS: environmental tobacco smoke; median frequency in those who was exposed to ETS during the day of assessment = 4 times.