Table 6.
Results of psychosocial interventions to help smokers reduce.a
| Study | % (CPD) reducedb | % Achieved ≥ 50% reductionb |
|---|---|---|
| Published studies | ||
| Early studies | ||
| Glasgow et al. 1983 | 13% (4) | |
| 35% (12) | ||
| Recent studies | ||
| Riggs et al. 2001 | 38% (10) | 30% |
| 45% (12) | 50% | |
| Riley et al. 2002 | 23% (6) | 30% |
| 21% (6) | 16% | |
| Unpublished recent study | ||
| Brue 2002 | 41% (10) | 58% |
| 25th-75th percentile for all studies | 21–41% (6–12) | 30–50% |
a
CPD = cigarettes per day; bold type = from our calculations; italics = studies in previous review.
b
Includes abstainers.