Table 2 Breakdown of number of participants followed-up and quitters at 3 and6 months and 1 year, as defined by self-report, carbon monoxide and salivary cotinine

52 (88.1%)

50 (87.7%)

36 (61.0%)

35 (61.4%)

33 (55.9%)

23 (40.4%)

9/59 (15.3%)

5/57 (8.8%)

6/59 (10.2%)

3/57 (5.3%)

7/59 (11.9%)

3/57 (5.3%)

9/59 (15.3%)

4/57 (7.0%) (1 missing value)

6/59 (10.2%)

2/57 (3.5%) (1 missing value)

na

na

6 + 1* + 2** (15.3%)

2 + 2* + 1** (8.8%)

5 + 1* (10.2%)

2 + 1* (5.3%)

4 + 1^† + 2^‡

2 + 1^†

Quitters

9/59 (15.3%)

5/57 (8.8%)

6/59 (10.2%)

3/57 (5.3%)

4/59 (6.8%)

2/57 (3.5%)