Table 2 Characteristics of the included systematic reviews
Researchers and publication time | Types of included studies | Number of studies (total sample) | Age | Interventions | Follow-up time | Evaluation criteria of methodology | Conclusions | |
|---|---|---|---|---|---|---|---|---|
Treatment group | Control group | |||||||
Chen 2014 [11] | RCT | 12 (1001) | 39–80 | Banxia baizhu tianma tang + conventional medicine | Conventional medicine | – | Jadad | As compared with conventional medicine banxia baizhu tianma tang combined with it can improve the clinical curative effect in treating high blood pressure |
Wang 2012 [12] | RCT | 11 (981) | 36–86 | Danshen injection + control group | Hemostatic agents、dehydrator, regulation of blood pressure, brain cell protective agent | 6 months | Jadad | Danshen injection has a certain treatment effect in treating hypertensive cerebral hemorrhage, and the earlier the better |
Guo 2013 [13] | RCT | 14 (1364) | – | Liuwei dihuang pill + conventional medicine | Conventional medicine | – | Jadad | The whole therapy effect of liuwei dihuang pill combined with conventional medicine is better than that of single conventional medicine, and so do the SBP and DBP |
Zhou 2012 [22] | RCT | 8 (554) | – | Tianma gouteng yin + captopril | Captopril | – | Jadad | Compared with single captopril, the clinical efficacy of tianma gouteng yin combined with captopril is more better, which can improve symptoms with better blood pressure effect |
Dong 2011 [23] | RCT | 6 (543) | – | Tianma gouteng yin + captopril | Captopril | – | Jadad | Tianma gouteng yin may obtain better treatment result and more security than enalapril in treatment of essential hypertension |
Ren 2006 [24] | RCT | 11 (1010) | – | TCM combination therapy including Chinese herb medicine, Chinese patent medicines, acupuncture, etc.) + conventional medicine | Conventional medicine | – | Jadad | Traditional Chinese medicine may have similar effect with conventional medicine in primary hypertension therapy |
Dai 2010 [25] | RCT | 9 (655) | – | Therapied by Chinese herb medicine or combined with conventional medicine | Conventional medicine | – | Jadad | Traditional Chinese medicine can reduce the SBP and DBP effectively, improve efficiency, integrated Chinese and Western treatment is more better |
Du 2014 [26] | RCT | 10 (1777) | – | Yangxue qingnao granules + conventional medicine | Conventional medicine | – | Risk of bias | Yangxue qingnao granules can significantly improve headache, dizziness, insomnia symptoms of high blood pressure |
Li 2012 [27] | RCT | 17 (1323) | – | TCM combination therapy including Chinese herb medicine compound, Chinese patent medicines, acupuncture, etc.) + conventional medicine | Conventional medicine | – | Jadad | Traditional Chinese medicine has a certain effect in treatment of elderly hypertension patients and reduced pulse pressure with symptoms reduced |
Xiong 2012 [28] | RCT | 16 (1424) | 19–78 | Banxia baizhu tianma tang + blood pressure drugs | Blood pressure drugs or placebo | – | Risk of bias | Banxia baizhu tianma tang has better antihypertensive effect |
Wang 2013 [29] | RCT | 22 (1808) | 30–74 | Tianma gouteng yin + blood pressure drugs | Blood pressure drugs | – | Risk of bias | The efficacy and safety evidence of tianma gouteng yin, as an adjunct of blood pressure medicine, needs further study |
Wu 2013 [30] | RCT | 9 (784) | – | Tianma gouteng yin | Conventional medicine | – | Jadad | Tianma gouteng yin can effectively lower the SBP and DBP |