Chinese Herbal Medicine for the Treatment of Prehypertension

Table 1

Characteristics and methodological quality of included studies.

Study ID	Sample	Diagnosis standard	Intervention	Control	Course (week)	Outcome measure
Yang 2011 [45]	90	JNC-7; GCRNDTCM	CHM (800 mL/d^#) + control	Life style intervention	4	BP
Li 2010 [46]	80	JNC-7; GCRNDTCM	BBTD (400 mL/d^#) + control	Life style intervention	4	BP
Li et al. 2011 [47]	123	JNC-7; TCM diagnostic criteria (unclear)	RQSPD (200 mL/d^#)	No treatment	4	BP
Wu and Ding 2011 [48]	80	JNC-7; GCRNDTCM	TPKP (1.2 g tid) + control	Life style intervention	8	BP
Zhang 2012 [49]	57	JNC-7; TCM diagnostic criteria (unclear)	BPLLD (1 bag bid)	Life style intervention	12	BP

Note: CHM: Chinese herb medicine; BBTD: Banxia baizhu tianma decoction; RQSPD: replenishing qi and strengthening spleen decoction; TPKP: tiao ping kang pill; BPLLD: blood pressure-lipid lowering decoction.