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Table 1 Participant characteristics at baseline by randomised group

From: The impact of participant mental health on attendance and engagement in a trial of behavioural weight management programmes: secondary analysis of the WRAP randomised controlled trial

Baseline characteristics
  BI (n = 211) CP12 (n = 528) CP52 (n = 528)
Age (years) [mean ± SD] 51.91 ± 14.07 53.63 ± 13.26 53.30 ± 13.96
Female 143 (68%) 357 (68%) 359 (68%)
Body mass index (BMI: kg/m2) [mean ± SD] 34.43 ± 4.63 34.68 ± 5.39 34.45 ± 5.05
Self-reports taking antidepressant medication 26 (19%) 81 (21%) 81 (23%)
Anxiety [mean ± SD] 7.25 ± 4.29 6.89 ± 3.97 7.29 ± 4.09
Depression [mean ± SD] 5.58 ± 3.77 5.24 ± 3.38 5.20 ± 3.64
Ethnicity White or White British 181 (86%) 480 (91%) 475 (90%)
Asian or Asian British 9 (4%) 11 (2%) 15 (3%)
Black or Black British 5 (2%) 12 (2%) 6 (1%)
Mixed or multiple ethnic group 4 (2%) 4 (1%) 7 (1%)
Other, missing, or prefer not to say 12 (6%) 21 (4%) 25 (4%)
Index of Multiple Deprivation (IMD) decile 1 (least deprived) 16 (8%) 45 (9%) 44 (8%)
2 8 (4%) 16 (3%) 26 (5%)
3 12 (6%) 38 (7%) 32 (6%)
4 17 (8%) 37 (7%) 38 (8%)
5 31 (15%) 49 (9%) 50 (10%)
6 19 (9%) 61 (12%) 57 (11%)
7 32 (15%) 67 (13%) 63 (12%)
8 19 (9%) 69 (13%) 75 (14%)
9 12 (6%) 51 (10%) 47 (9%)
10 (most deprived) 45 (21%) 95 (18%) 94 (18%)
Level of education None 7 (3.57%) 25 (5%) 27 (6%)
GCSE or equivalent 55 (28%) 153 (32%) 155 (33%)
A-Level or equivalent 53 (27%) 95 (20%) 110 (24%)
Post-secondary study 10 (5%) 14 (3%) 10 (2%)
University degree or equivalent 48 (24%) 108 (23%) 97 (21%)
Higher degree or equivalent 23 (12%) 79 (17%) 68 (15%)
Household income £0–£19,999 65 (33%) 125 (25%) 138 (28%)
£20,000–£49,999 66 (33%) 173 (34%) 176 (35%)
£50,000+ 41 (21%) 91 (18%) 84 (17%)
Do not know / Prefer not to say 27 (14%) 113 (23%) 101 (20%)
  1. Abbreviations: WW Formerly Weight Watchers, BI Brief intervention, CP12–12 week commercial weight management programme (WW), CP52–52 week commercial weight management programme (WW), SD Standard deviation, BMI Body mass index, GCSE General Certificate of Secondary Education, A-Level – Advanced Level Qualification