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Table 4 Adjusted negative binomial regression model for the impact of statistical reporting and analysis on citation frequency.

From: The relationship between quality of research and citation frequency

Variable Ratio Standard error 95% CI Lower Bound 95% CI Upper bound P-value
Intercept 27.25 1.08 23.24 31.95  
Journal      
▪AGP 3.11 1.11 2.53 3.82 < 0.001
▪AJP 1.77 1.10 1.48 2.11 < 0.001
▪NJP 0.06 1.21 0.04 0.08 < 0.001
▪Reference BJP 1.00     
Research question      
▪not stated 0.99 1.10 0.82 1.19 0.888
▪stated 1.00     
Primary outcome      
▪not stated 0.94 1.10 0.78 1.14 0.554
▪stated 1.00     
Sample size      
▪not reported 0.98 1.11 0.80 1.20 0.855
▪reported 1.00     
Incomplete description of procedures      
▪yes 0.83 1.10 0.69 1.00 0.048
▪no 1.00     
Inappropriate analysis      
▪yes 1.05 1.12 0.85 1.31 0.640
▪no 1.00     
Incomplete analysis      
▪yes 0.95 1.10 0.78 1.15 0.601
▪no 1.00     
Overuse of tests      
▪yes 1.026 1.10 0.86 1.23 0.778
▪no 1.00     
Dispersion parameter 1.75 1.04 1.62 1.88