Table 1.
Baseline characteristics
| BA (n=221) | CBT (n= 219) | All (n=440) | ||
|---|---|---|---|---|
| Trial characteristics | ||||
| Method of recruitment | ||||
| Primary care | 192 (87%) | 190 (87%) | 382 (87%) | |
| IAPT | 29 (13%) | 29 (13%) | 58 (13%) | |
| Patient characteristics | ||||
| Age (years) | 43.9 (14·1) | 43·0 (14·1) | 43·5 (14·1) | |
| Sex | ||||
| Male | 79 (36%) | 71 (32%) | 150 (34%) | |
| Female | 142 (64%) | 148 (68%) | 290 (66%) | |
| Number of episodes of depression (including current) | ||||
| Mean | 7·0 (15·0) | 6·3 (13·8) | 6·7 (14·4) | |
| Median | 3·0 (1–5) | 2·0 (1–5) | 3·0 (1–5) | |
| Age of onset of first depression episode (years) | 27·2 (15·0) | 26·3 (13·5) | 26·7 (14·2) | |
| Duration of antidepressant treatment (weeks)* | ||||
| Mean; n | 215 (817); 160 | 116 (480); 169 | 164 (666); 329 | |
| Median; n | 21 (10–78); 160 | 18 (7–52); 169 | 19 (8–71); 329 | |
| At least one comorbid anxiety disorder | 131 (59%) | 141 (64%) | 272 (62%) | |
| Marital status | ||||
| Single | 68 (31%) | 59 (27%) | 127 (29%) | |
| Cohabiting (not married) | 29 (13%) | 25 (11%) | 54 (12%) | |
| Civil partnership | 1 (<1%) | 1 (<1%) | 2 (<1%) | |
| Married | 84 (38%) | 92 (42%) | 176 (40%) | |
| Divorced or separated | 39 (18%) | 42 (19%) | 81 (18%) | |
| Number of children | ||||
| 0 | 74 (33%) | 72 (33%) | 146 (33%) | |
| 1 | 35 (16%) | 31 (14%) | 66 (15%) | |
| 2 | 67 (30%) | 69 (32%) | 136 (31%) | |
| 3 | 31 (14%) | 27 (12%) | 58 (13%) | |
| ≥4 | 14 (6%) | 20 (9%) | 34 (8%) | |
| Level of education | ||||
| No qualifications | 25 (11%) | 30 (14%) | 55 (13%) | |
| GCSEs or O Levels | 36 (16%) | 43 (20%) | 79 (18%) | |
| AS or A Levels | 28 (13%) | 22 (10%) | 50 (11%) | |
| NVQ or other vocational qualification | 54 (24%) | 71 (32%) | 125 (28%) | |
| Undergraduate degree | 44 (20%) | 35 (16%) | 79 (18%) | |
| Postgraduate degree | 28 (13%) | 14 (6%) | 42 (10%) | |
| Doctoral degree | 2 (1%) | 1 (<1%) | 3 (1%) | |
| Professional degree (eg, MD) | 4 (2%) | 3 (1%) | 7 (2%) | |
| Ethnicity | ||||
| White British | 204 (92%) | 197 (90%) | 402 (91%) | |
| Other | 17 (8%) | 22 (10%) | 38 (9%) | |
| Stratification or minimisation variables | ||||
| PHQ-9 category | ||||
| <19 | 118 (53%) | 118 (54%) | 236 (54%) | |
| ≥19 | 103 (47%) | 101 (46%) | 204 (46%) | |
| Antidepressant use | ||||
| Yes | 172 (78%) | 173 (79%) | 345 (78%) | |
| No | 49 (22%) | 46 (21%) | 95 (22%) | |
| Site | ||||
| Devon | 74 (33%) | 73 (33%) | 147 (33%) | |
| Durham | 79 (36%) | 78 (36%) | 157 (36%) | |
| Leeds | 68 (31%) | 68 (31%) | 136 (31%) | |
Data are n (%), mean (SD), or median (IQR), unless otherwise indicated. IAPT=Improving Access to Psychological Therapies. GCSE=General Certificate of Secondary Education. O Level=Ordinary Level. AS Level=Advanced Subsidiary Level. A Level=Advanced Level. NVQ=National Vocational Qualification. MD=Doctor of Medicine. PHQ-9=Patient Health Questionnaire 9.
*
16 participants who reported that they were using antidepressant medication at baseline did not report duration of use (12 in the BA group and four in the CBT group).