Table 1 Baseline characteristics of the study population (pregnant smokers)
From: Smoking cessation advice recorded during pregnancy in United Kingdom primary care
|  | Total pregnancies (N = 45,296) | Recorded smoking cessation advice (%*) (N = 12,454) | |
|---|---|---|---|
Age at conception | Â | Â | Â |
15-19Â years | 5,019 | 1,538 | (30.6%) |
20-24Â years | 12,180 | 3,355 | (27.5%) |
25-29Â years | 12,005 | 3,153 | (26.3%) |
30-34Â years | 9,736 | 2,613 | (26.8%) |
35-39Â years | 5,254 | 1,457 | (27.7%) |
40-44Â years | 1,048 | 317 | (30.2%) |
45-49Â years | 54 | 21 | (38.9%) |
Townsend score in quintiles | Â | ||
Quintile 1 - most affluent | 5,380 | 1,293 | (24.0%) |
Quintile 2 | 6,156 | 1,625 | (26.4%) |
Quintile 3 | 8,842 | 2,360 | (26.7%) |
Quintile 4 | 11,432 | 3,303 | (28.9%) |
Quintile 5 - most deprived | 10,572 | 3,141 | (29.7%) |
Missing | 5,380 | 1,293 | (24.0%) |
Pre-conception body mass index | Â | Â | Â |
Normal (18.0-24.9) | 19,579 | 5,144 | (26.3%) |
Underweight (<18.0) | 2,106 | 588 | (27.9%) |
Overweight (25–29.9) | 8,897 | 2,547 | (28.4%) |
Obese (> = 30) | 6,338 | 1,874 | (29.6%) |
Missing | 8,302 | 2,301 | (27.7%) |
Asthma | 5,238 | 2,102 | (40.1%) |
Hypertension | 969 | 315 | (32.5%) |
Diabetes | 942 | 310 | (32.9%) |
Mental illness | 7,193 | 2,184 | (30.4%) |
At least one of above morbidities** | 12,577 | 4,177 | (33.2%) |