How can we successfully recruit depressed people? Lessons learned in recruiting depressed participants to a multi-site trial of a brief depression intervention (the ‘CLASSIC’ trial)

Table 5 Attrition rates for the 10 sites before and after the pause

	Total number (%) recruited and randomised	3-month follow-up before protocol change, n (%)	3-month follow-up after protocol change, n (%)
Lewisham	49 (52.1%)	17 (34.7%)	33 (67.3%)
Wandsworth	48 (78.7%)	17 (35.4%)	35 (72.9%)
Merton	38 (66.7%)	12 (31.6%)	33 (86.8%)
Sub-total for three sites	135	46 (34.1%)	101 (74.8%)
After pause and review of procedures
Croydon	73 (78.5%)		64 (87.7%)
Lambeth	34 (58.6%)		28 (82.4%)
Bexley	51 (72.9%)		42 (82.4%)
Greenwich	49 (57.6%)		39 (79.6%)
Kingston	45 (60.0%)		42 (93.3%)
Lewisham 2	34 (54.0%)		30 (88.2%)
Croydon 2	38 (48.7%)		36 (94.7%)
Sub-total for seven sites	324		281 (86.7%)
Total	459 (62.5%)		382^a (83.2%)

^aOne additional person withdrew consent and one additional person provided incomplete follow-up BDI data

ISSN: 1745-6215