Table 1 Participants’ characteristics per strategy
From: Recruiting families for an intervention study to prevent second-hand smoke exposure in children
Strategy | Questionnaire A communities n = 6,987 | Questionnaire A physicians n = 3,013 | MIKADO n = 202 | Schools n = 32,000 | Total 42,202 |
|---|---|---|---|---|---|
Response (n (%)) | 1,012 (15) | 887 (29) | 104 (51) | 1,540 (5) | 3543 (8) |
Primary caregiver responder: | |||||
- Mother (n (%)) | 843 (83) | 757 (85) | 87 (84) | 1,244 (81) | 2,931 (83) |
- Father (n (%)) | 158 (16) | 120 (14) | 14 (14) | 271 (18) | 563 (16) |
- Other (n (%)) | 11 (1) | 10 (1) | 3 (3) | 25 (2) | 49 (1) |
Age of children (mean (SD)) | 6.2 (4.1) | 7.6 (4.2) | 9.2 (2.3) | 8.1 (2.5) | 7.5 (3.6) |
Age of mother (mean (SD)) | 38.9 (6.3) | 40.3 (5.6) | Not asked | 39.8 (5.1) | 39.8 (5.7)c |
Highest parental educationa | |||||
- Low (n (%)) | 31 (3) | 41 (5) | 23 (22) | 41 (3) | 136 (4) |
- Middle (n (%)) | 268 (27) | 262 (30) | 50 (48) | 405 (29) | 985 (28) |
- High (n (%)) | 404 (40) | 454 (51) | 28 (27) | 730 (45) | 1,616 (46) |
- Academic (n (%)) | 300 (30) | 126 (14) | 3 (3) | 332 (22) | 761 (21) |
- Other (n (%)) | 0 | 0 | 32 (2) | 32 (1) | |
- Missing (n (%)) | 9 (1) | 4 (1) | 13 (0) | ||
Active smoking of both parents (n (%))b | 306 (16) | 257 (15) | 141 (70) | 507 (17) | 1,211 (34) |
Active smoking at least one parent per family (n (%)) | 250 (25) | 210 (24) | 104 (100) | 390 (25) | 954 (27) |
Smoking in the presence of the child (n (%)) | 131 (13) | 135 (15) | 104 (100) | 141 (9) | 511 (14) |
Wheezing ever (n (%)) | 283 (28) | 255 (29) | 29 (28) | 478 (31) | 1,045 (29) |
Wheezing in the past 12 months (n (%)) | 144 (14) | 114 (13) | 7 (7) | 229 (15) | 494 (14) |
Asthma diagnosis (n (%))c | 66 (13) | 65 (12) | 0 | 161 (11) | 292 (8) |
Respiratory tract infection in the past 12 months (n (%)) | 413 (41) | 278 (31) | Not asked | 567 (37) | 1,258 (37)d |
Asthma in the first degree relative (n (%)) | 258 (26) | 215 (24) | 104 (100) | 423 (28) | 1,000 (28) |