Table 1 Comparison of baseline characteristics of non-participant women vs. recruited women, by SPRINT trial arm (C: Control arm, S: Smoking intervention, S + PA: Smoking and physical activity intervention)
| Â | Non participant women (n= 902) | Recruited women (n= 1,100) | p-value | C (n= 371) | S (n= 363) | S + PA (n= 366) |
|---|---|---|---|---|---|---|
Age (years) - mean (sd) | 42 (11.8) | 43 (10.8) | 0.005 | 43 (10.3) | 43 (11.2) | 44 (11.0) |
Education: graduated - n (%) | 218 (24.2) | 204 (18.5) | 0.002 | 68 (18.3) | 70 (19.3) | 66 (18.0) |
Marital status - n(%) | Â | Â | 0.006 | Â | Â | Â |
   Never married | 296 (32.8) | 280 (25.4) |  | 90 (24.3) | 98 (27.0) | 92 (25.1) |
   Married | 471 (52.2) | 616 (56.0) |  | 219 (59.0) | 194 (53.7) | 202 (55.2) |
   Divorced/separated | 105 (11.6) | 163 (14.8) |  | 49 (13.2) | 58 (16.0) | 56 (15.3) |
   Widowed | 22 (2.4) | 30 (2.7) |  | 9 (2.4) | 8 (2.2) | 13 (3.5) |
Women with children - n (%) | 282 (31.3) | 387 (35.2) | 0.169 | 139 (37.5) | 122 (33.6) | 126 (34.4) |
Employed - n (%) | 600 (66.5) | 773 (70.3) | 0.048 | 258 (69.5) | 258 (71.1) | 257 (70.2) |
Study centre - n (%) | Â | Â | < 0.001 | Â | Â | Â |
   Florence, Tuscany | 194 (47.4) | 215 (52.6) |  | 72 (19.4) | 73 (20.1) | 70 (19.1) |
   Turin, Piedmont | 495 (50.3) | 489 (49.7) |  | 165 (44.5) | 161 (44.3) | 163 (44.5) |
   Mantua, Lombardy | 213 (35.0) | 396 (65.0) |  | 134 (36.1) | 129 (35.5) | 133 (36.3) |
Physical activity characteristics | ||||||
30 min. of moderate/intense PA ≥ 5 days a week - n (%) | 440 (48.8) | 499 (45.4) | 0.146 | 177 (47.7) | 155 (42.7) | 167 (45.6) |
Stage - n(%) | Â | Â | 0.318 | Â | Â | Â |
   Precontemplation/Contemplation | 212 (23.5) | 286(26.0) |  | 99 (26.7) | 92(25.3) | 95(26.0) |
   Preparation | 171(19.0) | 227(20.6) |  | 69(18.6) | 82(22.6) | 76(20.8) |
   Action/Maintenance | 440(48.8) | 499(45.4) |  | 177(47.7) | 155(42.7) | 167(45.6) |
   Missing | 79 (8.8) | 88 (8.0) |  | 26(7.0) | 34(9.4) | 28(7.6) |
Smoking habits characteristics | ||||||
Cigarettes per day - mean (sd) | 9(6.3) | 12 (7.1) | < 0.001 | 13 (7.7) | 12 (6.8) | 12 (7.0) |
   ≥ 20 cigarettes per day - n(%) | 87 (9.6) | 230 (20.9) | < 0.001 | 87 (23.4) | 71 (19.6) | 72 (19.7) |
Age of smoking initiation -mean (sd) | 19 (5.0) | 18 (5.0) | 0.142 | 18 (6.5) | 18 (4.7) | 19 (5.3) |
≥ 1 quit attempts - n(%) | 454 (50.3) | 708 (64.4) | < 0.001 | 250 (67.4) | 242 (66.7) | 216 (59.0) |
Stage (%) | Â | Â | < 0.001 | Â | Â | Â |
   Precontemplation | 556 (61.6) | 338 (30.7) |  | 113(30.5) | 102(28.1) | 123(33.6) |
   Contemplation | 199 (22.1) | 353 (32.1) |  | 128(34.5) | 110(30.3) | 115(31.4) |
   Preparation | 84 (9.3) | 359 (32.6) |  | 117(31.5) | 130(35.8) | 112(30.6) |
   Missing | 63(7.0) | 50(4.5) |  | 13(3.5) | 21(5.8) | 16(4.4) |
Fagerström Test for Nicotine Dependence | ||||||
High-very high dependence - n(%) | --§ | 254 (23.1) |  | 99 (26.7) | 87 (24.0) | 68 (18.6) |
Smoking the first cigarette within 5 min. after awakening- n (%) | --§ | 120 (10.9) |  | 45 (12.1) | 39 (10.7) | 36 (9.8) |