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Table 3 Median sample sizes per arm of pilot and feasibility studies by endpoint and funder

From: An audit of sample sizes for pilot and feasibility trials being undertaken in the United Kingdom registered in the United Kingdom Clinical Research Network database

  

Sample size per arm

n

Median

(IQR) [Range]

Pilot

Industry

Dichotomous

5

25

(25, 30) [10, 90]

Continuous

6

23

(15, 31) [8, 100]

Public

Dichotomous

6

36

(30, 42) [20, 60]

Continuous

21

30

(20, 60) [15, 114]

Feasibility

Industry

Dichotomous

0

.

.

Continuous

1

30

.

Public

Dichotomous

9

50

(30, 70) [25, 300]

Continuous

6

43

(15, 60) [10, 60]

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BMC Medical Research Methodology

ISSN: 1471-2288

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