Characteristic | All cohort N (%) | Responders at 3 months postnatal N (%) | Non-responders and withdrawals at 3 months postnatal N (%) | p Value |
---|---|---|---|---|
N=850 | N=476 | N=374 | ||
Smoking behaviour baseline | ||||
Recent ex-smoker | 362 (43.4) | 235 (50.1) | 127 (34.7) | |
≤5 cigarettes per day | 191 (22.9) | 105 (22.4) | 86 (23.5) | |
6–10 cigarettes per day | 151 (18.08) | 71 (15.1) | 80 (21.9) | |
≥11 cigarettes per day | 131 (15.4) | 58 (12.4) | 73 (20.0) | <0.0001 |
Age (years) Mean (SD) | 25.8 (5.5) | 26.5 (5.6) | 24.8 (5.3) | <0.0001 |
Ethnicity | ||||
White British | 751 (89.0) | 421 (89.0) | 330 (89.0) | |
Other ethnicity | 93 (11.0) | 52 (11.0) | 41 (11.1) | 0.0007 |
Highest qualification | ||||
No qualifications | 155 (18.2) | 62 (13.0) | 94 (25.1) | |
GCSEs or equivalent | 355 (41.8) | 184 (38.7) | 171 (45.7) | |
AS/A-Levels or equivalent | 174 (20.5) | 118 (24.8) | 56 (15.0) | |
Degree or equivalent | 133 (15.7) | 95 (20.0) | 38 (10.2) | |
Other qualification | 33 (2.9) | 17 (3.6) | 16 (4.3) | <0.0001 |
Age left education | ||||
≤16 years of age | 469 (56.4) | 232 (50.0) | 237 (64.6) | |
≥17 years of age | 334 (40.2) | 211 (45.4) | 123 (33.5) | |
Still in full-time education | 28 (2.4) | 21 (4.5) | 7 (1.9) | <0.0001 |
Employment | ||||
Paid work, manual | 158 (18.7) | 102 (21.5) | 56 (15.0) | |
Paid work, non-manual | 180 (21.3) | 131 (27.6) | 49 (13.1) | |
Paid work, unclear whether manual/non-manual | 45 (5.3) | 27 (5.7) | 18 (4.8) | |
Unemployed | 201 (23.7) | 92 (19.4) | 109 (29.2) | |
Full-time parent | 219 (25.9) | 97 (20.5) | 122 (32.7) | |
Full-time student | 23 (2.7) | 13 (2.7) | 10 (2.7) | |
Other | 21 (2.5) | 12 (2.5) | 9 (2.4) | <0.0001 |
Indices Multiple Deprivation score (IMD)* | ||||
1st tertile | 284 (33.6) | 178 (37.4) | 106 (28.8) | |
2nd tertile | 279 (33.1) | 162 (34.0) | 117 (31.8) | |
3rd tertile | 281 (33.3) | 136 (28.6) | 145 (39.4) | 0.002 |
Baseline heaviness of smoking index (smokers only) | ||||
Low addiction | 321 (67.6) | 171 (72.8) | 150 (62.5) | |
Moderate addiction | 146 (30.7) | 61 (26.0) | 85 (35.4) | |
High addiction | 8 (1.7) | 3 (1.3) | 5 (2.1) | 0.06 |
Partner smoking baseline | ||||
Partner does not smoke tobacco | 499 (59.1) | 172 (36.4) | 122 (32.9) | |
Partner smokes tobacco | 294 (34.8) | 279 (58.9) | 220 (59.3) | |
No partner | 51 (6.0) | 22 (4.7) | 29 (7.8) | 0.12 |
*Higher score reflects greater deprivation.
GCSE, General Certificate of Secondary Education.