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Table 1 Methodological characteristics of 248 pediatric critical care trials (1986 to 2013)

From: Randomized controlled trials in pediatric critical care: a scoping review

Characteristics

RCTs n (%)

Multicentered

45 (18)

Multinational

14 (6)

Number of children randomized

49 (30 to 93)a

Min 6, Max 1199b

Number of children included in analysis

44 (28 to 80)a

Min 6, Max 980b

Type of primary outcome

 

 Laboratory or physiological

44 (18)

 Clinical complications

29 (12)

 Duration of ventilation

14 (6)

 Severity of illness score

14 (6)

 Clinical success

13 (5)

 Process of care

13 (5)

 Mortality

5 (2)

 Other

32 (13)

 Not reported

82 (33)

Source of funding

 

 Noncommercial only

102 (41)

 Commercial only

28 (11)

 Both commercial and noncommercial

12 (5)

 None

5 (2)

 Not reported

101 (41)

Non-financial commercial support only

21 (8)

Early stopping

 

 No

79 (32)

 Yes

34 (15)

  Futility, recruitment or funding

23 (9)

  Benefit

5 (2)

  Harm

2 (1)

  Unclear

4 (2)

 Unclear

133 (54)

  1. aMedian (IQR, interquartile range); bthis maximum does not include the one cluster RCT that randomized ten PICUs at five sites and included 4,947 children [15].