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Table 1 Trial characteristics (design)

From: Exploring trial publication and research waste in COVID-19 randomised trials of hydroxychloroquine, corticosteroids, and vitamin D: a meta-epidemiological cohort study

Characteristics, n (%)

HCQ

Steroid

Vit D

Total, n (%)

 

192

108

57

357

Study design info provided

172

103

52

327

 Parallel

163 (94.8)

99 (96)

47 (90.4)

309 (94.5)

 Factorial

7 (4)

2 (2)

5 (9.6)

14 (4.3)

 Other

2 (1.2)

2 (2)

0 (0)

4 (1.2)

Phase of trial info provided

182

95

43

320

 Phase 0 or 1

4 (2.2)

2 (2.1)

1 (2.3)

7 (2.2)

 Phase 2 or 1–2

59 (26.9)

16 (16.8)

11 (25.6)

76 (23.8)

 Phase 3 or 2–3

93 (51.1)

57 (60)

20 (46.5)

170 (53.1)

 Phase 4 or 3–4

36 (19.8)

20 (21.1)

11 (25.6)

67 (20.9)

Country info provided

184

102

57

343

 Multinational

11 (6)

7 (6.9)

2 (3.5)

20 (5.8)

No. arms info provided

192

108

57

357

 > 2 randomised groups

63 (32.8)

15 (13.9)

11 (19.3)

89 (24.9)

Control info provided

192

108

57

357

 Placebo control

62 (32.3)

15 (13.9)

30 (52.6)

107 (29.9)

Primary sponsor info provided

192

108

57

357

 Academic

52 (27.1)

41 (38)

22 (38.6)

115 (32.2)

 Research institute

18 (9.4)

15 (13.9)

8 (14)

41 (11.5)

 Governmental

13 (6.8)

2 (1.8)

3 (5.3)

18 (5)

 Medical centre

80 (41.6)

35 (32.4)

13 (22.8)

128 (35.9)

 Pharmaceutical

8 (4.2)

4 (3.7)

3 (5.3)

15 (4.2)

 Other

19 (9.9)

10 (9.3)

8 (14)

37 (10.4)

 No sponsor

2 (1)

1 (0.9)

0 (0)

3 (0.8)

Email contact info provided

192

108

57

357

 Email contact available

98 (51)

70 (64.8)

36 (63.2)

204 (57.1)