Table 2 Comparision of randomized control trials indexed in CNKI database before and after 2010 in terms of CONSORT items

Title and abstract

1a

56 (0.80)

23 (0.56)

33 (1.15)

0.006

1b

5852 (83.67)

3505 (84.81)

2347 (82.03)

0.002

Background and objectives

2a

2028 (29.00)

1021 (24.71)

1007 (35.20)

<0.001

2b

410 (5.86)

263 (6.36)

147 (5.14)

0.032

Trial design

3a

277 (3.96)

184 (4.45)

93 (3.25)

0.011

Participants

4a

3925 (56.12)

2058 (49.79)

1867 (65.26)

<0.001

4b

4938 (70.60)

2664 (64.46)

2274 (79.48)

<0.001

Interventions

5

5699 (81.48)

3342 (80.86)

2357 (82.38)

0.107

Outcomes

6a

6176 (88.30)

3626 (87.73)

2550 (89.13)

0.074

Sample size

7a

20 (0.29)

8 (0.19)

12 (0.42)

0.082

Sequence generation

8a

1137 (16.26)

569 (13.77)

568 (19.85)

<0.001

8b

117 (1.67)

78 (1.89)

39 (1.36)

0.093

Allocation concealment mechanism

9

48 (0.69)

30 (0.73)

18 (0.63)

0.63

Implementation

10

36 (0.51)

31 (0.75)

5 (0.17)

0.001

Blinding

11a

268 (3.83)

197 (4.77)

71 (2.48)

<0.001

11b

8 (0.11)

5 (0.12)

3 (0.10)

1.000

Statistical methods

12a

4686 (67.00)

2604 (63.00)

2082 (72.77)

<0.001

Flow diagram

13a

20 (0.29)

11 (0.27)

9 (0.31)

0.709

13b

246 (3.52)

141 (3.41)

105 (3.67)

0.564

Recruitment

14a

5198 (74.32)

2899 (70.14)

2299 (80.36)

<0.001

Baseline data

15

445 (6.36)

232 (5.61)

213 (7.44)

0.002

Numbers analyzed

16

127 (1.82)

80 (1.94)

47 (1.64)

0.367

Outcomes and estimation

17a

89 (1.27)

58 (1.40)

31 (1.08)

0.241

17b

21 (0.30)

8 (0.19)

13 (0.45)

0.050

Harms

19

1830 (26.17)

1096 (26.52)

734 (25.66)

0.42

Limitations

20

572 (8.18)

356 (8.61)

216 (7.55)

0.11

Generalizability

21

187 (2.67)

115 (2.78)

72 (2.52)

0.498

Interpretation

22

6473 (92.55)

3806 (92.09)

2667 (93.22)

0.077

Registration

23

1 (0.01)

0 (0)

1 (0.03)

0.853

Protocol

24

1 (0.01)

0 (0)

1 (0.03)

0.853

Funding

25

413 (5.91)

270 (6.53)

143 (5.00)

0.007