Table 2

Literature survey: Frequency of methodological components appearing in pilot or feasibility studies of interventions (n = 261) in 2007-8

n (%)


Sample size calculation

9 (35%)

Hypothesis testing

21 (81%)

Randomization

16 (62%)

Blinding

5 (19%)

Control group

18 (69%)

Further study suggested

21 (81%)

Median number of participants (IQR)

76 [8, 1299]


1Pilot studies = 14 Feasibility studies = 12

Arain et al. BMC Medical Research Methodology 2010 10:67   doi:10.1186/1471-2288-10-67

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