Table 2 Characteristics of participants included in the analysis for the By-Band-Sleeve trial. Sample size (N) is up to 118 where there was no missing data.
Characteristic | All participants (mean ± SD or n (%)) | N | Male, N = 36 | Female, N = 82 | p-value |
|---|---|---|---|---|---|
Age (years) | 50 (10) | 118 | 50 (9) | 50 (10) | 0.76 |
Body mass index (BMI) (kg/m2) | 45 (8) | 118 | 46 (7) | 45 (8) | 0.27 |
Baseline systolic blood pressure (mmHg) | 136 (15) | 118 | 138 (15) | 136 (15) | 0.70 |
Baseline diastolic blood pressure (mmHg) | 84 (7) | 118 | 85 (8) | 83 (7) | 0.30 |
Smoking category | Â | 118 | Â | Â | 0.069 |
 Never | 49 (42%) |  | 14 (39%) | 35 (43%) |  |
 Ex-smoker | 64 (54%) |  | 18 (50%) | 46 (56%) |  |
 Rarely or occasionally | 5 (4.2%) |  | 4 (11.1%) | 1 (1.2%) |  |
Diabetic (diet, oral treated or insulin) | 42 (36%) | 118 | 22 (61%) | 21 (26%) | 2.2 × 10–4 |
Time since diabetes diagnosis (months) | 76 (65) | 118 | 72 (49) | 80 (79) | 0.63 |
Ethnicity | Â | 118 | Â | Â | 0.70 |
 English/Welsh/Northern Irish/Scottish/British | 110 (93%) |  | 33 (92%) | 77 (94%) |  |
 Other (Any other white background, Irish, Gypsy/Traveller, White and Black Caribbean) | 8 (7%) |  | 3 (8%) | 5 (6.1%) |  |
Employment status |  | 118 |  |  | 8.3 × 10–3 |
 Full-time | 38 (32%) |  | 16 (44%) | 22 (27%) |  |
 Part-time | 27 (23%) |  | 5 (14%) | 22 (27%) |  |
 Self-employed | 9 (7.6%) |  | 6 (17%) | 3 (3.7%) |  |
 Other (Homemaker/Student/Retired/Unable to work/Unemployed) | 44 (37.2%) |  | 9 (25%) | 35 (43%) |  |
Income | Â | 114 | Â | Â | 0.91 |
 < £10,000–20,000 | 53 (46%) |  | 18 (51%) | 35 (44%) |  |
 £20,001-£40,000 | 38 (33%) |  | 11 (31%) | 27 (34%) |  |
 > £40,001 | 23 (20%) |  | 6 (17%) | 17 (22%) |  |
Baseline triglycerides (mmol/L) | 1.59 (0.76) | 118 | 1.83 (0.74) | 1.48 (0.75) | 3.6 × 10–3 |
Baseline LDL-cholesterol (mmol/L) | 2.71 (0.96) | 117 | 2.39 (0.89) | 2.86 (0.96) | 0.014 |
Baseline HDL-cholesterol (mmol/L) | 1.21 (0.27) | 118 | 1.03 (0.17) | 1.29 (0.27) | 8.7 × 10–7 |
Baseline total cholesterol (mmol/L) | 4.65 (1.10) | 118 | 4.25 (0.94) | 4.83 (1.12) | 9.3 × 10–3 |
