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. 2008 Oct 8;2008(4):CD000448. doi: 10.1002/14651858.CD000448.pub3

Comparison 1. Hypericum mono‐preparations vs. placebo A. Dichotomous measures.

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
1 Responder ‐ grouped by precision ‐ primary analysis 18 3064 Risk Ratio (M‐H, Random, 95% CI) 1.48 [1.23, 1.77]
1.1 Less precise trials 9 1020 Risk Ratio (M‐H, Random, 95% CI) 1.87 [1.22, 2.87]
1.2 More precise trials 9 2044 Risk Ratio (M‐H, Random, 95% CI) 1.28 [1.10, 1.49]
2 Responder ‐ according to HAMD 16 2706 Risk Ratio (M‐H, Random, 95% CI) 1.51 [1.22, 1.87]
2.1 Less precise trials 8 948 Risk Ratio (M‐H, Random, 95% CI) 1.94 [1.19, 3.18]
2.2 More precise trials 8 1758 Risk Ratio (M‐H, Random, 95% CI) 1.28 [1.06, 1.53]
3 Responder ‐ according to CGI (Clinical Global Impression Index at least "much improved") 13 2306 Risk Ratio (M‐H, Random, 95% CI) 1.47 [1.24, 1.74]
3.1 Less precise trials 7 869 Risk Ratio (M‐H, Random, 95% CI) 1.74 [1.30, 2.33]
3.2 More precise trials 6 1437 Risk Ratio (M‐H, Random, 95% CI) 1.26 [1.06, 1.50]
4 Responder ‐ grouped by extract 18   Risk Ratio (M‐H, Random, 95% CI) Subtotals only
4.1 extract LI 160 6 981 Risk Ratio (M‐H, Random, 95% CI) 1.31 [0.92, 1.86]
4.2 extract WS 5570 2 699 Risk Ratio (M‐H, Random, 95% CI) 1.57 [0.96, 2.56]
4.3 extract WS 5572 2 170 Risk Ratio (M‐H, Random, 95% CI) 1.47 [1.05, 2.06]
4.4 extract STW3‐VI 2 401 Risk Ratio (M‐H, Random, 95% CI) 3.59 [0.41, 31.56]
4.5 other extracts 6 813 Risk Ratio (M‐H, Random, 95% CI) 1.45 [1.08, 1.93]
5 Responder among studies from German‐speaking countries and other studies 18 3064 Risk Ratio (M‐H, Random, 95% CI) 1.48 [1.23, 1.77]
5.1 Studies from German‐speaking countries 11 1770 Risk Ratio (M‐H, Random, 95% CI) 1.78 [1.42, 2.25]
5.2 Studies from other countries 7 1294 Risk Ratio (M‐H, Random, 95% CI) 1.07 [0.88, 1.31]
6 Remission (HAMD score < 8 or < 7) 6 1236 Odds Ratio (M‐H, Random, 95% CI) 2.77 [1.80, 4.26]