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

Table 4

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

Study or subgroup	Experimental			Control				Mean difference	Mean difference
	Mean	SD	Total	Mean	SD	Total	Weight	IV, fixed, 95% CI	IV, fixed, 95% CI
Fan et al. [31]	2.1	1.854	30	2.97	1.968	30	6.7%	−0.87 [−1.84, 0.10]
Luo et al. [21]	1.27	1.218	22	2	1.697	19	7.4%	−0.73 [−1.65, 0.19]
Pan et al. [35]	2.3	0.9	56	2.4	1.2	54	39.5%	−0.10 [−0.50, 0.30]
Wu et al. [34]	14	0.74	40	1.74	1.04	40	39.9%	−0.34 [−0.74, 0.06]
Zheng and Luo [22]	2.2	1.86	30	2.87	1.98	30	6.6%	−0.67 [−1.64, 0.30]
Total (95% Cl)			178			173	100.0%	−0.33 [−0.58, −0.08]
Heterogeneity: Chi^2 = 3.69; df = 4 (𝑃=0.45); 𝑙^2 = 0%
Test for overall effect: 𝑍 = 2.60 (𝑃=0.009)