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Table 3 Results of linear and logistic regression analyses

From: Collaboration in orthodontic clinical trials: prevalence and association with sample size and funding

  Sample size Coefficient Odds ratio P value 95% CI
Sample size Authorship collaboration
National collaboration − 4.89 0.75 − 34.61, 24.84
International collaboration within the same continent 14.54 0.56 − 34.47, 63.55
International collaboration within different continents 0.17 0.1 − 34.93, 44.27
Study conduct collaboration
National collaboration 70.26 0.00* 33.59, 106.93
International collaboration within the same continent 89.58 0.31 − 84.09, 263.25
International collaboration within different continents − 30.42 0.73 − 204.09, 143.25
Funding status Authorship collaboration
National collaboration 2.37 0.1 0.85, 6.57
International collaboration within the same continent 1.00
International collaboration within different continents 5.54 0.13 0.62, 49.52
Study conduct collaboration 0.77 0.7 0.21, 3.43
  1. CI confidence interval
  2. *P <0.05