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Table 2 Prevalence of NHST and CI across periods, languages and research areas.

From: The null hypothesis significance test in health sciences research (1995-2006): statistical analysis and interpretation

  

Total of papers

P-values and no CI

 

CI and P-values

 

CI and no P-values

   

n

% (95%CI)

 

n

% (95%CI)

 

n

% (95%CI)

Period

1995-1996

285

119

41 (35 to 47)

 

138

49 (43 to 55)

 

28

10 (6 to13)

 

2000-2001

278

101

38 (31 to 44)

 

150

51 (44 to 58)

 

27

11 (6 to 15)

 

2005-2006

306

65

21 (16 to 26)

 

198

65 (59 to 71)

 

43

14 (9 to 17)

Language

Spanish

396

156

39 (34 to 43)

 

211

54 (49 to 59)

 

29

7 (5 to 10)

 

English

473

129

32 (28 to 36)

 

275

55 (51 to 60)

 

69

12 (10 to 15)

Area

Clinical

300

166

52 (45 to 58)

 

125

45 (39 to 51)

 

9

3 (1 to 6)

 

General Medicine

278

69

22 (17 to 27)

 

170

61 (55 to 67)

 

39

17 (12 to 22)

 

Public Health and Epidemiology

291

50

18 (13 to 23)

 

191

65 (59 to 71)

 

50

17 (13 to 22)

  1. CI: Confidence Interval