Table 1

Results for nursing interventions versus control analysed by hospital and primary care setting

Number quitting/total

Percent quitting (95% CI)

Setting

Number of studies

Intervention

Control

Intervention

Control

Relative benefit (95% CI)

NNT (95% CI)

Hospital

7

435/1367

318/1295

32 (30 to 34)

25 (23 to 27)

1.3 (1.1 to 1.6)

14 (9 to 26)

Primary care

3

111/2453

41/1006

4.5 (3.7 to 5.3)

4.1 (2.9 to 5.3)

0.8 (0.3 to 2.6)

222 (52 to -98)

Combined

10

546/3820

359/2301

14 (12 to 16)

16 (14 to 18)

1.2 (0.9 to 1.6)

-76 (184 to -32)

Moore et al. BMC Medical Research Methodology 2002 2:2   doi:10.1186/1471-2288-2-2