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Table 2 Summary of RCTs using herbal medicines for tic disorders

From: Herbal medicines for treating tic disorders: a systematic review of randomised controlled trials

Author (year)

Sample size

Interventions (regimen)

Control (regimen)

Outcomes

Intergroup differences

Adverse events

Conditions

Age (years)

Diagnosis criteria

Wu et al. (2009) [14]

81

(A) QZR (decoction, 200 ml daily for 24 wks, n = 40)

(B) Haloperidol and trihexyphenidyl (50 μg/kg, n = 41)

(1) YGTSS Score

(1) MD −20.73 [−21.8, –19.66], P < 0.05

(A) Loss of appetite

Children with tic disorder

8–10

66/15

DSM-IV criteria

(2) Effective rate

(2) RR 1.72[1.32, 2.25], P < 0.05

(B) Weight gain and drowsiness

Wu et al. (2010) [15]

61

(A) QZR (decoction, 200 ml daily for 24 wks, n = 31)

(B) Haloperidol and trihexyphenidyl (50 μg/kg, n =30)

(1) YGTSS Score

(1) MD −15.9 [−17.31, −14.49], P < 0.05

(A) Loss of appetite

Children with tic disorder

51/10

DSM-IV criteria

(2) Effective rate

(2) RR 1.65[1.23, 2.21], P < 0.05

(B) Weight gain and drowsiness

Zhao et al. (2010) [16]

64

(A) ND (granule capsule, 1 g daily for 8 wks, n = 33)

(B) Placebo (n = 31)

(1) YGTSS Score

(1) MD −6.52 [−9.8, –3.24], P < 0.001

(A) Loss of appetite, constipation

(2) Effective rate

(2) RR4.3 [ 1.68, 11.0], P < 0.001

(B) None

Children with Tourette’s syndrome

7–18

57/7

DSM-IV criteria

Li et al. (2009) [17]

90

(A) ND (granules, 3–9 g daily for 24 wks, n = 60), plus (B)

(B) Haloperidol (2–6 mg, n = 30)

(1) YGTSS Score

(1) MD −4.35 [−7.34, –1.36], P < 0.01

(A) and (B) Drowsiness, lassitude, poor appetite

Children with Tourette’s syndrome

(2) Effective rate

(2) RR1.3 [ 1.04, 1.62], P < 0.01

6–13

70/20

DSM-IV criteria