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

Woelk 2000.

Methods Concealment: unclear 
 Blinding: Double‐blind (double dummy) 
 Drop‐outs/withdrawals: 15/157 (hypericum), 32 of 167 (imipramine) 
 Jadad score: 2‐2‐0 
 IV score: 1‐0‐1‐0.5‐0.5‐0
Participants Patients included/analyzed: 324/324 
 Demographics: 71% female, mean age 46 years 
 Diagnosis: mild to moderate depression (ICD10 F32.0 or 1, F33.0 or 1) 
 Setting: 40 practices for psychiatry, internal medicine, GP in Germany 
 Baseline: HAMD 22.4 +/‐3.4 (hypericum), 22.1 +/‐ 2.9 (imipramine)
Interventions Treatment: 2x1 coated tablet (500 mg extract) Hypericum extract ZE 117 daily for 6 weeks 
 Control: Imipramine 150 mg daily for 6 weeks
Outcomes Observation period: 6 weeks 
 Physician‐rated: Hamilton Depression Scale (HAMD, 17 items; at least 50% reduction), Clinical Global Impression Index (CGI) 
 Patient‐rated: global assessment
Notes Some additional information by manufacturer of the extract
Risk of bias
Bias Authors' judgement Support for judgement
Allocation concealment? Unclear risk B ‐ Unclear