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Table 2 Methodological quality of included trials

From: Therapeutic role of corticosteroids in COVID-19: a systematic review of registered clinical trials

Trial identifier

Estimated sample size

Allocation (randomized/non-randomized)

Blinding/masking

Study design

NCT04438980

72

Randomized

Double

Interventional

NCT04435795

454

Randomized

Triple

Interventional

NCT04425863

10

Not available

Not available

Non-interventional, prospective cohort

NCT04416399

478

Randomized

Open label

Interventional

NCT04411667

40

Randomized

Open label

Interventional

NCT04395105

284

Randomized

Open label

Interventional

NCT04394182

15

Not available

Open label

Interventional

NCT04381936

12000

Randomized

Open label

Interventional

NCT04348305

1000

Randomized

Quadruple

Interventional

NCT04331054

436

Randomized

Open label

Interventional

NCT04360876

90

Randomized

Double

Interventional

NCT04355247

20

Not available

Open label

Interventional

NCT04381364

446

Randomized

Open label

Interventional

NCT04380818

106

Non-randomized

Open label

Interventional

NCT04377711

400

Randomized

Double

Interventional

NCT04377503

40

Randomized

Open label

Interventional

NCT04374474

75

Randomized

Open label

Interventional

NCT04366115

126

Randomized

Open label

Interventional

NCT04361474

120

Randomized

Single

Interventional

NCT04359511

210

Randomized

Single

Interventional

NCT04355637

300

Randomized

Open label

Interventional

NCT04349410

500

Randomized

Single

Interventional

NCT04347980

122

Randomized

Single

Interventional

NCT04263402

100

Randomized

Single

Interventional

NCT04193878

600

Randomized

Triple

Interventional

NCT03852537

90

Randomized

Double

Interventional

NCT02735707

7100

Randomized

Open label

Randomized, multifactorial trial

NCT04345445

310

Randomized

Open label

Interventional

NCT04344730

550

Randomized

Quadruple

Interventional

NCT04344288

304

Randomized

Open label

Interventional

NCT04343729

425

Randomized

Quadruple

Interventional

NCT04341038

84

Randomized

Single

Interventional

NCT04331470

30

Randomized

Double

Interventional

KCT0005105

141

Randomized

Open label

Interventional

NCT04329650

200

Randomized

Open label

Interventional

NCT04327401

350

Randomized

Open label

Interventional

NCT04325061

200

Randomized

Open label

Interventional

NCT04323592

173

Non-randomized

Open label

Non-interventional, prospective cohort

NCT04374071

250

Non-randomized

Not available

Non-interventional, retrospective cohort

NCT04244591

80

Randomized

Open label

Interventional

NCT04273321

86

Randomized

Open label

Interventional

IRCT20080901001165N52

50

Randomized

Open label

Interventional

IRCT20200406046963N1

40

Randomized

Open label

Interventional

IRCT20200404046947N1

68

Randomized

Single

Interventional

IRCT20081027001411N3

60

Randomized

Single

Interventional

IRCT20120215009014N354

81

Randomized

Double

Interventional

IRCT20200204046369N1

48

Non-randomized

Open label

Interventional

IRCT20200318046812N2

906

Randomized

Open label

Interventional

IRCT20151227025726N17

48

Randomized

Open label

Interventional

IRCT20120225009124N4

105

Randomized

Open label

Interventional

ChiCTR2000029386

24

Randomized

Not available

Interventional

ChiCTR2000029656

50

Randomized

Open label

Interventional

ChiCTR2000030481

75

Randomized (static)

Not available

Interventional

2020-001827-15

72

Randomized

Double

Interventional

2020-001307-16

104

Randomized

Open label

Interventional

2020-001395-15

1000

Randomized

Double

Interventional

2020-001622-64

200

Randomized

Open label

Interventional

2020-001934-37

200

Randomized

Open label

Interventional

2020-001413-20

100

Randomized

Open label

Interventional

2020-001445-39

84

Randomized

Open label

Interventional