Table 2 |
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|
Comparison between review results for nicotine patch in 1994 and 2000 |
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|
Review year |
1994 |
2000 |
|
|
|
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|
a) All trials |
No. of trials |
9 |
30 |
|
Odds ratio |
2.07 |
1.73 |
|
|
95% CI |
1.64–2.62 |
1.56–1.93 |
|
|
Χ2 & p for heterogeneity |
7.08 (p = 0.53) |
41.75(p = 075) |
|
|
b) Level of support sub group: |
No. of trials |
4 |
12 |
|
-Low intensity |
Odds ratio |
2.52 |
1.74 |
|
95% CI |
1.64–3.87 |
1.48–2.04 |
|
|
Χ2 & p for heterogeneity |
4.84(p = 0.18) |
18.69(p = 0.096) |
|
|
-High intensity |
No. of trials |
5 |
18 |
|
Odds ratio |
1.99 |
1.73 |
|
|
95% CI |
1.49–2.64 |
1.51–1.99 |
|
|
Χ2 & p for heterogeneity |
2.55 (p = 0.64) |
23.06 (p = 0.15) |
|
|
c) Length of follow-up subgroups: |
No. of trials |
3 |
11 |
|
-6 months |
Odds ratio |
1.96 |
1.96 |
|
95% CI |
1.44–2.66 |
1.65–2.34 |
|
|
Χ2 & p for heterogeneity |
1.74(p = 0.72) |
8.06 (p = 0.62) |
|
|
-12 months |
No. of trials |
6 |
19 |
|
Odds ratio |
2.09 |
1.62 |
|
|
95% CI |
1.39–3.12 |
1.42–1.84 |
|
|
Χ2 & p for heterogeneity |
2.38 (p = 0.67) |
30.67 (p = 0.044) |
|
|
|
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|
Stead et al. BMC Medical Research Methodology 2001 1:10 doi:10.1186/1471-2288-1-10 |
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