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Table 1 Characters of randomization methods, allocation concealment and blinding of included RCTs

From: Quality assessment of reporting of randomization, allocation concealment, and blinding in traditional chinese medicine RCTs: A review of 3159 RCTs identified from 260 systematic reviews

Item

Chinese

Foreign

Total

χ2*

P

 

Adequate

Inadequate

n

Adequate

Inadequate

n

Adequate

Inadequate

N

  
 

(%)

(%)

 

(%)

(%)

 

(%)

(%)

   

randomization methods

239(9)

2341(91)

2580

142(25)

437(75)

579

381(12)

2778(88)

3159

103.8

0.000

allocation concealment

56(2)

2524(98)

2580

151(26)

428(74)

579

207(7)

2952(93)

3159

441.4

0.000

blinding

252(10)

2328(90)

2580

349(60)

230(40)

579

601(19)

2558(81)

3159

783.1

0.000

randomization method + allocation concealment

39(2)

2541(98)

2580

91(16)

488(84)

579

130(4)

3029(96)

3159

241.8

0.000

randomization method + allocation concealment + blinding

33(1)

2547(99)

2580

67(12)

512(88)

579

100(3)

3059(97)

3159

163.4

0.000

  1. * Proportion of adequate comparison of Chinese with foreign