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Table 2 Factors associated with collecting qualitative data+

From: More pilot trials could plan to use qualitative data: a meta-epidemiological study

Variable Crude OR (95%CI) p value Adjusted OR (95% CI) p value
Journal
 PAFS 1   1  
 BMJ Open 0.45 (0.21–0.99) 0.047 0.80 (0.29–2.26) 0.677
 Trials 0.48 (0.24–0.99) 0.046 0.55 (0.20–1.51) 0.244
Year of publication 1.02 (0.85–1.23) 0.834 0.97 (0.76–1.24) 0.827
Region
 Rest of the world 1   1  
 North America 1.91 (0.81–4.53) 0.141 2.19 (0.80–5.99) 0.125
 Europe 3.76 (1.88–7.53) < 0.001 3.86 (1.68–8.88) 0.001
Funding
 Industry 1   1  
 Government or private 0.67 (0.36–1.26) 0.211 0.81 (0.36–1.84) 0.621
Intervention type
 Non-pharmacological 1   1  
 Pharmacological 0.21 (0.08–0.56) 0.002 0.20 (0.07–0.58) 0.003
Sample size
 Small (n < 60) 1   1  
 Large (n ≥ 60) 3.06 (1.72–5.46) < 0.001 2.77 (1.47–5.23) 0.002
  1. CI confidence interval, PAFS Pilot and Feasibility Studies, BMJ Open British Medical Journal Open, OR odds ratio
  2. +The Hosmer and Lemeshow test for model fit indicated good fit (p = 0.265)