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Table 2 Total number of members and collaborations with other organizations (N = 265)

From: Trends in the development process of clinical practice guidelines: a questionnaire survey for the guideline development groups in Japan

  

Publication period

P

by 2005

2006–2010

2011–2015

2016–2019

(N = 40)

(N = 47)

(N = 77)

(N = 101)

Number of members

mean (SD)

25.5 (14.4)

23.9 (18.2)

26.5 (30.3)

37.2 (36.2)

0.036 b

CPGs including

 Methodologist a

n (%)

20 (52.6)

26 (55.3)

34 (48.6)

57 (64.0)

0.228 c

 Health economist

n (%)

8 (20.0)

7 (14.9)

12 (15.6)

17 (16.8)

0.796 c

 Patient representative

n (%)

5 (12.5)

4 (8.7)

12 (15.6)

33 (32.4)

0.001 c

CPGs collaborating with

 Academic society

n (%)

29 (78.4)

36 (76.6)

60 (77.9)

79 (79.0)

0.842 c

 Medical association

n (%)

8 (21.6)

10 (22.7)

12 (15.8)

18 (18.4)

0.524 c

 Patient group

n (%)

2 (5.4)

5 (11.1)

10 (13.5)

21 (21.2)

0.014 c

  1. a "Methodologist" includes epidemiologists, statisticians, evidence-based medicine experts, experts in the guideline development, or librarians
  2. b Jonckheere-Terpstra test
  3. c Mantel-Haenszel test for trend
  4. Abbreviations: CPG clinical practice guideline, SD standard deviation