Table 1.
Demographics of population
| Specialist (n=511) |
Standard (n=502) |
p Value | |
| Age (years; mean (SD)) | 29.8 (5.4) | 29.3 (5.5) | 0.11 |
| BMI (kg/m2; mean (SD)) | 44.5 (4.3) | 43.2 (3.1) | <0.001 |
| Ethnicity (n (%))* | 0.35 | ||
| White | 441 (94.6) | 432 (92.9) | |
| Other | 25 (5.4) | 33 (7.1) | |
| Parity (n (%)) | <0.001 | ||
| 0 | 235 (46.0) | 125 (24.9) | |
| 1 | 161 (31.5) | 212 (42.2) | |
| 2 or more | 115 (22.5) | 165 (32.9) | |
| Smoking status (n (%))* | 0.51 | ||
| Current | 45 (17.2) | 42 (13.7) | |
| Former | 63 (24.0) | 79 (25.7) | |
| Never | 154 (58.8) | 186 (60.6) | |
| Deprivation quintile (n (%))†* | 0.07 | ||
| 1 | 140 (27.7) | 108 (22.2) | |
| 2 | 141 (27.9) | 150 (30.9) | |
| 3 | 95 (18.8) | 107 (22.0) | |
| 4 | 66 (13.1) | 74 (15.2) | |
| 5 | 63 (12.5) | 47 (9.7) | |
| Systolic blood pressure (mm Hg; mean (SD)) | 122 (11.9) | 122 (11.1) | 0.79 |
| Diastolic blood pressure (mm Hg)† | 75 (9.0) | 75 (8.0) | 0.98 |
SD, standard deviation; BMI, body mass index.
*Missing data includes n=82 (8%) from ethnicity, n=444 (44%) from smoking and n=12 (1.2%) from deprivation quintile. Missing data are high from smoking as this was not a mandatory field on the electronic record until 2012.
†Deprivation quintile where 1 is the most and 5 the least deprived.