scholarly journals Efficacy and Safety of Cordyceps militaris as an Adjuvant to Duloxetine in the Treatment of Insomnia in Patients With Depression: A 6-Week Double- Blind, Randomized, Placebo-Controlled Trial

2021 ◽  
Vol 12 ◽  
Author(s):  
Jiaojiao Zhou ◽  
Xu Chen ◽  
Le Xiao ◽  
Jingjing Zhou ◽  
Lei Feng ◽  
...  
Keyword(s):  
Placebo Group ◽  
Controlled Trial ◽  
Depression Scale ◽  
Cordyceps Militaris ◽  
Secondary Outcome ◽  
Controlled Study ◽  
Depression Symptom ◽  
Hamilton Depression Scale ◽  
Efficacy And Safety ◽  
Double Blind

Background: Insomnia is a common clinical manifestation in patients with depression. Insomnia is not only a depression symptom but also an independent risk factor for recurrence. Cordyceps militaris (C. militaris) is thought to have the potential to treat insomnia. This study aimed to examine the efficacy and safety of duloxetine with C. militaris in improving sleep symptoms in patients with depression.Methods: This study was a single-center, randomized, double-blind, placebo-controlled study that recruited outpatients admitted to Beijing Anding hospital from January 2018 to January 2019. Major depressive disorder (MDD) with insomnia was diagnosed according to the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR) criteria and Mini-International Neuropsychiatric Interview (M.I.N.I.). Eligible subjects will be randomly assigned to two treatment groups in a 1:1 ratio, and receive treatment and follow-up of about 6 weeks of duloxetine plus Cordyceps militaris or placebo, respectively. The severity of depression and insomnia was evaluated at baseline and at 1, 2, 4, and 6 weeks using the 17-item Hamilton Depression Scale (HAMD-17) and Athens Insomnia Scale (AIS).Results: A total of 59 subjects were included in the study (31 in the placebo group and 28 in the C. militaris group). 11 (18.6%) participants withdrew during the study period, 5 (17.9%) in the C. militaris group, and 6 (19.3%) in the placebo group. Depressive and sleep symptoms in all patients reduced over time. We found that the total scores of AIS and its subscales decreased more in the placebo group compared to the C. militaris group (p < 0.05). Secondary outcome revealed that there were no significant differences between the two groups in total HAMD-17 and its sleep factor scores (p > 0.05) at 1, 2, 4, and 6 weeks after treatment initiation. The incidences of adverse events were not significantly different between the two groups (all p > 0.05).Conclusion:C. militaris at the current dose and duration did not improve sleep symptoms in patients with depression, but it is safe with rare side effects.

scholarly journals Efficacy and Safety of Yokukansan in Treatment-Resistant Schizophrenia: A Randomized, Multicenter, Double-Blind, Placebo-Controlled Trial

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Tsuyoshi Miyaoka ◽  
Motohide Furuya ◽  
Jun Horiguchi ◽  
Rei Wake ◽  
Sadayuki Hashioka ◽  
...  
Keyword(s):  
Placebo Group ◽  
Controlled Trial ◽  
Controlled Study ◽  
Efficacy And Safety ◽  
Treatment Resistant ◽  
Double Blind ◽  
Double Blind Placebo ◽  
Intention To Treat ◽  
The Difference ◽  
The Individual

Objectives. We aimed at evaluating both the efficacy and safety of TJ-54 (Yokukansan) in patients with treatment-resistant schizophrenia. This randomized, multicenter, double-blind, placebo-controlled study was conducted.Methods. One hundred and twenty antipsychotic-treated inpatients were included. Patients were randomized to adjuvant treatment with TJ-54 or placebo. During a 4-week follow-up, psychopathology was assessed using the Positive and Negative Syndrome Scale (PANSS).Results. TJ-54 showed a tendency of being superior to placebo in reduction total, positive, and general PANSS scores in treatment-resistant schizophrenia, but the difference was not statistically significant in both per-protocol set (PPS) and intention-to-treat (ITT). However, in PPS analysis, compared to the placebo group, the TJ-54 group showed statistically significant improvements in the individual PANSS subscale scores for lack of spontaneity and flow of conversation (TJ-54:−0.23±0.08; placebo:−0.03±0.08,P<0.018), tension (TJ-54:−0.42±0.09; placebo:−0.18±0.09,P<0.045), and poor impulse control (TJ-54:−0.39±0.10; placebo:−0.07±0.10,P<0.037).Conclusions. The results of the present study indicate that TJ-54 showed a tendency of being superior to placebo in reduction PANSS scores in treatment-resistant schizophrenia, but the difference was not statistically significant. However, compared to the placebo group, TJ-54 group showed statistically significant improvements in the individual PANSS subscale scores.

scholarly journals Efficacy and Safety of Chuanxiong Qingnao Granule in Patients with Migraine: A Randomized, Double-Blind, Placebo-Controlled Trial

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Yi-Fan Li ◽  
Hui-Min Hu ◽  
Bo-Ning Wang ◽  
Yi Zhang ◽  
Xing Liu ◽  
...  
Keyword(s):  
Treatment Group ◽  
Migraine Attack ◽  
Controlled Trial ◽  
Depression Scale ◽  
Control Group ◽  
Hamilton Depression Scale ◽  
Efficacy And Safety ◽  
Attack Frequency ◽  
Double Blind ◽  
Double Blind Placebo

Objective. To evaluate the efficacy and safety of Chuanxiong Qingnao Granule (CQG) to treat migraine. Method. This study was a randomized, double-blind, placebo-controlled trial. All migraineurs were recruited and randomly assigned into a treatment group treated with CQG and a control group treated with a placebo. The whole research process included a 4-week baseline, 12-week intervention, and 12-week follow-up. The primary outcome was responder rate, defined as the percentage of migraineurs with 50% or more reduction in the frequency of migraine attack during treatment and posttreatment period compared with the baseline. The secondary outcomes were the number of migraine days, migraine attack frequency, visual analogue scale (VAS), Fatigue Severity Scale (FSS), Hamilton Depression Scale (HAMD), and Migraine Disability Assessment (MIDAS). Results. A total of 346 migraineurs completed the research and were included in the intention-treatment analyses. The response rates differed significantly between the treatment group and the control group (71.5% vs. 12.1% at week 12 and 83.1% vs. 3.4% at week 24). Attack frequency, days of headache attack, VAS, FSS, HAMD, and MIDAS decreased at week 12 in both groups with more reduction in the treatment group ( P < 0.001 ). No severe adverse events were observed in this trial. Conclusion. Chuanxiong Qingnao Granule can significantly improve headache symptoms in patients with migraine while improving disability, fatigue, and depression with a good safety profile.

scholarly journals Efficacy and safety of Xiaoyao pills for mild to moderate depression: study protocol for a randomized controlled trial

Trials ◽  
2022 ◽  
Vol 23 (1) ◽  
Author(s):  
Zhe Xue ◽  
Zhen Huang ◽  
Shu-li Cheng ◽  
Xi-hong Wang ◽  
Xuan Zhou ◽  
...  
Keyword(s):  
Chinese Medicine ◽  
Traditional Chinese Medicine ◽  
Adverse Reactions ◽  
Controlled Trial ◽  
Depression Scale ◽  
Secondary Outcome ◽  
Controlled Clinical Trial ◽  
Hamilton Depression Scale ◽  
Efficacy And Safety ◽  
Moderate Depression

Abstract Background Depression is one of the most frequent and severe psychiatric conditions. Many chemical drugs to treat depression are associated with adverse reactions and have shortcomings. Traditional Chinese medicine is of great significance in the prevention and treatment of depression. Xiaoyao pills has achieved good results in clinical application, which has the advantages of quick effect and no obvious adverse reactions. The aim of our study is to evaluate the efficacy and safety of Xiaoyao pills on mild to moderate depression patients. Methods This study is a multi-centre, double-blinded, randomized and placebo-controlled clinical trial. A total of 108 participants are assigned to three groups: Xiaoyao pill group taking Xiaoyao pills twice daily for 4 weeks, placebo group taking placebos twice daily for 4 weeks and normal group without taking any drug. The primary and secondary outcome measures are the Hamilton Depression Scale (HAMD) and Traditional Chinese Medicine (TCM) Syndrome Scale. The assessment is at baseline (before treatment initiation), 1 week, 2 weeks 4 weeks after the first treatment. Exploratory outcome is also assessed to explore the mechanism of Xiaoyao pills at baseline and 4 weeks. Discussion The results from this study will provide clinical evidence on the efficacy and safety of Xiaoyao pills in patients with mild to moderate depression with syndrome of liver stagnation and spleen deficiency. Trial registration ClinicalTrials.gov ISRCTN12746343. Registered on September 25, 2020.

scholarly journals A Randomised Controlled Trial on the Efficacy and Safety of Oral Ketamine in Neonatal Circumcision

2021 ◽  
Author(s):  
Victor Ifeanyichukwu Modekwe ◽  
Jideofor Okechukwu Ugwu ◽  
Okechukwu Hyginus Ekwunife ◽  
Andrew Nwankwo Osuigwe ◽  
Jideofor Chukwuma Orakwe ◽  
...  
Keyword(s):  
Placebo Group ◽  
Controlled Trial ◽  
Controlled Study ◽  
Categorical Variables ◽  
Paediatric Surgery ◽  
Peripheral Oxygen Saturation ◽  
Double Blind ◽  
Oral Ketamine ◽  
The Mean ◽  
Neonatal Circumcision

Introduction: Procedural analgesia use in neonatal circumcision is not widespread in the developing world. An easy-to-administer, adequate and safe analgesia will encourage usage in neonatal circumcision. Orally administered ketamine may prove effective and safe, and may encourage procedural analgesia use in neonatal circumcision. Aim: To determine the analgesic efficacy of oral ketamine in Plastibell® neonatal circumcision. Materials and Methods: A hospital based randomised double blind controlled study was conducted at the paediatric surgery unit of the hospital, from March 2015 to December 2015. Total 121 neonates were sequentially recruited, and randomised into two groups. Group A received oral ketamine, and Group B received plain syrup (placebo) as procedural analgesia. Continuous pulse oximeter monitoring was done before, during and immediately after the procedure. The pre-procedural and intra-procedural peripheral oxygen saturation (SpO2) and Pulse Rate (PR) were determined at the various stages. Also, the Neonatal Infant Pain Scale (NIPS) scores were assessed during the stages of the procedure. Differences in mean scores were analysed. Mann-Whitney U test and Independent t-test were used to compare means of continuous variable, while Fisher’s exact test was used to compare categorical variables. Significance was set at p<0.05. Results: Sixty-one neonates received oral ketamine, while 60 received placebo. The intraoperative mean SpO2 were lower in the placebo group and significant at the tying stage with p=0.022. The mean intraoperative PR was higher in the placebo group and significant at dorsal-slit, tying and excision stages (p<0.05). The mean intraoperative NIPS scores were significantly higher in the placebo group. Conclusion: Oral ketamine provides effective and safe analgesia for neonatal Plastibell® circumcision in comparison to placebo.

scholarly journals Safety and efficacy of herbal medicine for acute intracerebral hemorrhage (CRRICH): a multicentre randomised controlled trial

BMJ Open ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. e024932 ◽  
Author(s):  
Liling Zeng ◽  
Guanghai Tang ◽  
Jing Wang ◽  
Jianbin Zhong ◽  
Zhangyong Xia ◽  
...  
Keyword(s):  
Placebo Group ◽  
Herbal Medicine ◽  
Adverse Events ◽  
Intracerebral Haemorrhage ◽  
Poor Prognosis ◽  
Controlled Trial ◽  
Blood Stasis ◽  
Secondary Outcome ◽  
Controlled Study ◽  
Safety And Efficacy

ObjectiveTo evaluate the safety and efficacy of removing blood stasis (RBS) herbal medicine for the treatment of acute intracerebral haemorrhage (AICH) within a 6-hour time window.Study designA randomised, multicentre, double-blind, placebo-controlled study performed in 14 hospitals in China.Participants and interventionsPatients with AICH were randomly assigned to receive a placebo, the ICH-1 (Intracerebral Haemorrhage) formula (eight herbs, including the RBS herbs hirudo and tabanus) or the ICH-2 formula (six herbs without the RBS herbs hirudo and tabanus) within 6 hours of ICH onset.OutcomesThe primary safety outcome was the incidence of haematoma enlargement at 24 hours and at 10 days after treatment. The secondary outcome was the incidence of poor prognosis (mortality or modified Rankin Scale score ≥5) assessed at 90 days after symptom onset.ResultsA total of 324 subjects were randomised between October 2013 and May 2016: 105 patients received placebo; 108 patients received the ICH-1 formula; and 111 patients received the ICH-2 formula. The incidence of haematoma enlargement at 24 hours was 7.8% in the placebo group, 12.3% in the ICH-1 group and 7.5% in the ICH-2 group; the incidence of haematoma enlargement on day 10 was 1.1% in the placebo group, 1.1% in the ICH-1 group, and 3.1% in the ICH-2 group, with no significant differences among the groups (P>0.05). The mortality rates were 3.8% in the placebo group, 2.8% in the ICH-1 group, and 0.9% in the ICH-2 group; the incidences of poor prognosis were 7.1% in the placebo group, 6.0% in the ICH-1 group and 4.8% in the ICH-2 group at 3 months, with no significant differences among the groups (p>0.05). However, the overall frequency of treatment-emergent adverse events in the ICH-1 group (12.1%) was higher among the three groups (5.8% and 2.8%, respectively, p<0.05). All three cases of serious adverse events were in the ICH-1 group.ConclusionsUltra-early administration of ICH-1 formula for AICH patients did not exert significant beneficial effects on clinical outcomes but increased the risk of bleeding, which probably resulted from the inclusion of RBS herbal medicines in ICH-1.Trialregistration numberNCT01918722.

scholarly journals A 12-Week, Multicenter, Randomized, Double-Blind, Placebo-Controlled Clinical Trial for Evaluation of the Efficacy and Safety of DKB114 on Reduction of Uric Acid in Serum

Nutrients ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3794
Author(s):  
Yu Hwa Park ◽  
Do Hoon Kim ◽  
Jung Suk Lee ◽  
Hyun Il Jeong ◽  
Kye Wan Lee ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Uric Acid ◽  
Placebo Group ◽  
Serum Uric Acid ◽  
Controlled Study ◽  
Efficacy And Safety ◽  
Food Ingredient ◽  
Double Blind ◽  
Double Blind Placebo ◽  
Significant Difference

This study sought to investigate the antihyperuricemia efficacy and safety of DKB114 (a mixture of Chrysanthemum indicum Linn flower extract and Cinnamomum cassia extract) to evaluate its potential as a dietary supplement ingredient. This clinical trial was a randomized, 12-week, double-blind, placebo-controlled study. A total of 80 subjects (40 subjects with an intake of DKB114 and 40 subjects with that of placebo) who had asymptomatic hyperuricemia (7.0–9.0 mg/dL with serum uric acid) was randomly assigned. No significant difference between the DKB114 and placebo groups was observed in the amount of uric acid in serum after six weeks of intake. However, after 12 weeks of intake, the uric acid level in serum of subjects in the DKB114 group decreased by 0.58 ± 0.86 mg/dL and was 7.37 ± 0.92 mg/dL, whereas that in the placebo group decreased by 0.02 ± 0.93 mg/dL and was 7.67 ± 0.89 mg/dL, a significant difference (p = 0.0229). In the analysis of C-reactive protein (CRP) change, after 12 weeks of administration, the DKB114 group showed an increase of 0.05 ± 0.27 mg/dL (p = 0.3187), while the placebo group showed an increase of 0.10 ± 0.21 mg/dL (p = 0.0324), a statistically significant difference (p = 0.0443). In the analysis of amount of change in apoprotein B, after 12 weeks of administration, the DKB114 group decreased by 4.75 ± 16.69 mg/dL (p = 0.1175), and the placebo group increased by 3.13 ± 12.64 mg/dL (p = 0.2187), a statistically significant difference between the administration groups (p = 0.0189). In the clinical pathology test, vital signs and weight measurement, and electrocardiogram test conducted for safety evaluation, no clinically significant difference was found between the ingestion groups, confirming the safety of DKB114. Therefore, it may have potential as a treatment for hyperuricemia and gout. We suggest that DKB114 as a beneficial and safe food ingredient for individuals with high serum uric acid. Trial registration (CRIS.NIH. go. Kr): KCT0002840.

scholarly journals Clinical Efficacy and Safety of Thai Herbal Formulation-6 in the Treatment of Symptomatic Osteoarthritis of the Knee: A Randomized-Controlled Trial

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Nut Koonrungsesomboon ◽  
Saowaros Nopnithipat ◽  
Supanimit Teekachunhatean ◽  
Natthakarn Chiranthanut ◽  
Chaichan Sangdee ◽  
...  
Keyword(s):  
Knee Pain ◽  
Controlled Trial ◽  
Common Adverse Event ◽  
Mean Difference ◽  
Secondary Outcome ◽  
Osteoarthritis Of The Knee ◽  
Efficacy And Safety ◽  
Short Term Treatment ◽  
Double Blind ◽  
Herbal Formulation

Background. Osteoarthritis of the knee is the most common form of arthritis. Identifying effective and safe herbal formulations that are locally available is viewed as a priority for sustainable development in a region. This study aimed to evaluate the efficacy and safety of Thai herbal formulation-6 (THF-6) in comparison with oral diclofenac in patients with moderate-to-severe osteoarthritis of the knee. Methods. This randomized, double-blind, active-controlled, noninferiority trial randomly assigned patients with osteoarthritis of the knee to receive either THF-6 or diclofenac for four weeks. The primary outcome measure was the change from baseline in knee pain as measured by a 100 mm visual analog scale (VAS). Secondary outcome measures included knee stiffness, a stair climb test, the Knee Injury and Osteoarthritis Outcome Score, and safety parameters. Outcomes were assessed on a biweekly basis. Modified intention-to-treat (MITT) and perprotocol (PP) analyses were applied. Results. A total of 200 patients were enrolled of whom 175 (87.5%) were included in the MITT analysis and 153 (76.5%) in the PP analysis. The mean change in VAS pain did not differ between the two groups, and the upper limit of the two-sided 95% confidence interval (CI) for comparison between the two groups was within the prespecified margin of 10 mm for noninferiority (MITT analysis: mean difference = 0.86, 95% CI = -4.39 to 6.10, p = 0.748 ; PP analysis: mean difference = 1.98, 95% CI = -3.61 to 7.56, p = 0.486 ). Significant improvement was observed in all the efficacy parameters in both groups. Dyspepsia was the most common adverse event: 23 patients in the THF-6 group and 28 in the diclofenac group p = 0.417 . Conclusions. THF-6 offers an alternative to oral diclofenac for the short-term treatment of osteoarthritis of the knee. It was shown to be noninferior to oral diclofenac in relieving knee pain. This trial is registered with ChiCTR-IPR-15007213.

scholarly journals Efficacy and safety of galcanezumab for prevention of migraine headache in Japanese patients with episodic migraine: A phase 2 randomized controlled clinical trial

2020 ◽  
Vol 3 ◽  
pp. 251581632093257 ◽  
Author(s):  
Fumihiko Sakai ◽  
Akichika Ozeki ◽  
Vladimir Skljarevski
Keyword(s):  
Migraine Headache ◽  
Japanese Patients ◽  
Episodic Migraine ◽  
Secondary Outcome ◽  
Controlled Study ◽  
Controlled Clinical Trial ◽  
Life Questionnaire ◽  
Efficacy And Safety ◽  
Double Blind ◽  
Secondary Endpoints

Objective: This study was designed to assess the efficacy and safety of galcanezumab in comparison with placebo for the prevention of migraine in Japanese patients with episodic migraine. Methods: In this double-blind, placebo-controlled study, which was conducted over 6 months, randomized adult patients received subcutaneous injections of galcanezumab (120 mg n = 115, 240 mg n = 114) or placebo ( n = 230) once monthly. The primary endpoint was the overall mean change from baseline in the number of monthly migraine headache days. The key secondary outcome measures were response rates (≥50%, ≥75%, and 100%); the Migraine-Specific Quality-of-Life Questionnaire Role Function-Restrictive score; monthly migraine headache days requiring acute treatment; and Patient Global Impression of Severity (PGI-S). Results: The mean change from baseline in monthly migraine headache days over months 1–6 was significantly ( p < 0.001) greater for the 120-mg galcanezumab dose (−3.60 days) and the 240-mg galcanezumab dose (−3.36 days) compared with placebo (−0.59 days). Both the 120-mg and 240-mg doses of galcanezumab were superior compared with placebo for each of the key secondary endpoints except for PGI-S (only the 240-mg dose was superior). The most commonly reported treatment-emergent adverse events were local injection-site reactions; erythema, swelling, pruritus, and pain were more commonly reported by patients who were treated with galcanezumab than those treated with placebo. Conclusion: The number of monthly migraine headache days was reduced with both doses of galcanezumab, and both doses were safe and well tolerated in Japanese patients with episodic migraine.

scholarly journals Effects of bright light therapy for depression during pregnancy: a randomised, double-blind controlled trial

BMJ Open ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. e038030
Author(s):  
Babette Bais ◽  
Astrid M Kamperman ◽  
Hilmar H Bijma ◽  
Witte JG Hoogendijk ◽  
Jan L Souman ◽  
...  
Keyword(s):  
Depressive Symptoms ◽  
Pregnant Women ◽  
Rating Scale ◽  
Controlled Trial ◽  
Depression Scale ◽  
Bright Light ◽  
Light Therapy ◽  
Secondary Outcome ◽  
Bright Light Therapy ◽  
Double Blind

ObjectivesApproximately 11%–13% of pregnant women suffer from depression. Bright light therapy (BLT) is a promising treatment, combining direct availability, sufficient efficacy, low costs and high safety for both mother and child. Here, we examined the effects of BLT on depression during pregnancy.DesignRandomised, double-blind controlled trial.SettingPrimary and secondary care in The Netherlands, from November 2016 to March 2019.Participants67 pregnant women (12–32 weeks gestational age) with a DSM-5 diagnosis of depressive disorder (Diagnostic and Statistical Manual of Mental Disorders).InterventionsParticipants were randomly allocated to treatment with either BLT (9000 lux, 5000 K) or dim red light therapy (DRLT, 100 lux, 2700 K), which is considered placebo. For 6 weeks, both groups were treated daily at home for 30 min on awakening. Follow-up took place weekly during the intervention, after 6 weeks of therapy, 3 and 10 weeks after treatment and 2 months postpartum.Primary and secondary outcome measuresDepressive symptoms were measured primarily with the Structured Interview Guide for the Hamilton Depression Scale—Seasonal Affective Disorder. Secondary measures were the Hamilton Rating Scale for Depression and the Edinburgh Postnatal Depression Scale. Changes in rating scale scores of these questionnaires over time were analysed using generalised linear mixed models.ResultsMedian depression scores decreased by 40.6%–53.1% in the BLT group and by 50.9%–66.7% in the DRLT group. We found no statistically significant difference in symptom change scores between BLT and DRLT. Sensitivity and post-hoc analyses did not change our findings.ConclusionsDepressive symptoms of pregnant women with depression improved in both treatment arms. More research is necessary to determine whether these responses represent true treatment effects, non-specific treatment responses, placebo effects or a combination hereof.Trial registration numberNTR5476.

The Ham D6 is more homogenous and as sensitive as the Ham D17

2007 ◽  
Vol 22 (4) ◽  
pp. 252-255 ◽  
Author(s):  
Y. Lecrubier ◽  
P. Bech
Keyword(s):  
Effect Size ◽  
Controlled Trial ◽  
Depression Scale ◽  
Primary Outcome Measure ◽  
Antidepressant Effect ◽  
Hamilton Depression Scale ◽  
Recurrent Depression ◽  
Double Blind ◽  
Specificity And Sensitivity ◽  
Pre Treatment

AbstractObjectiveUsing the data of a positive d.b.c.t. comparing an hypericum extract (W55570) to placebo in depressed patients we explored whether the Ham D6 was unidimentional and in case of a positive answer whether the total score was as sensitive as the total score of the Ham D17.MethodsThe study was a 6 weeks double blind placebo controlled trial comparing 300 mg of hypericum t.i.d (n = 186), to placebo (n = 189), in patients with a single or recurrent depression according to DSM-IV. Superiority of hypericum versus placebo on the main outcome criterion (HDRS 17) was already published.The unidimensionality of the Hamilton depression scale 6 and 17 items were tested using a Mokken scale analysis. The effect size according to the initial severity of depression was calculated on the ITT last observation carried forward population.ResultsThe Ham D6, covering the core symptoms of depression was unidimensional, implying that improving this score reflects a true antidepressant effect. The Ham D17 was not unidimensional.Hypericum was an effective antidepressant in patients with a pre-treatment score of 12 or more (n = 208) on the Ham D6, the effect size was 0.46. No difference with placebo was observed for those with a score of less than 12 (n = 167).ConclusionsFor the evaluation of an antidepressant effect, because of its specificity and sensitivity, the Ham D6 should be used as a primary outcome measure rather than the Ham D17.

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