Chinese Herbal Medicine Paratherapy for Parkinson's Disease: A Meta-Analysis of 19 Randomized Controlled Trials

Table 5

Forest plot of comparison: Chinese herbal medicine versus conventional treatment: UPDRS II scores.

Study or subgroup	Experimental			Control				Mean difference	Mean difference
	Mean	SD	Total	Mean	SD	Total	Weight	lV, fixed, 95% Cl	lV, fixed, 95% Cl
Dou et al. [32]	11.01	5.73	35	13.39	6.48	35	8.8%	−2.38 [−5.25, 0.49]
Fan et al. [31]	10.83	5.658	30	12.86	4.872	30	10.1%	−2.03 [−4.70, 0.64]
Li et al. [33]	11.52	5.39	47	14.61	6.04	44	13.0%	−3.09 [−5.45, −0.73]
Luo et al. [21]	8.31	5.05	22	12.73	6.703	19	5.3%	−4.42 [−8.10, −0.74]
Pan et al. [35]	13.4	9.8	56	15.3	11.6	54	4.5%	−1.90 [−5.92, 2.12]
Wu et al. [34]	7.15	7.09	40	9.86	6.73	40	7.9%	−2.71 [−5.74, 0.32]
Yuan et al. [29]	16.47	4.45	60	18.19	4.51	60	28.1%	−1.72 [−3.32, −0.12]
Zhao et al. [26]	10.67	6.45	75	11.84	7.74	79	14.3%	−1.17 [−3.42, 1.08]
Zheng and Luo [22]	10.73	6.65	30	12.97	4.97	30	8.2%	−2.24 [−5.21, 0.73]
Total (95% Cl)			395			391	100.0%	−2.18 [3.03, −1.33]
Heterogeneity: Chi^2 = 3.26; df = 8 (𝑃=0.92); 𝑙^2 = 0%
Test for overall effect: 𝑍 = 5.03 (𝑃<0.00001)