Objective: This study aimed to identify predictors of citation rate of original research studies published in the Canadian Association of Radiologists Journal (CARJ). 
Methods: A search of MEDLINE was conducted from January 1, 2000 to June 30, 2013 to identify all studies published in the CARJ. Original research studies were included. Reviews, pictorial essays, guidelines, and original studies with a sample size <10 (including case studies and case series) were excluded. Variables assessed for association with citation rate included number of authors, study design, sample size, multi-institutional study, multi-national study, study type, presence of statistically significant result, presence of funding, and number of references. Statistical analysis was completed using linear regression and Pearson correlation coefficients (r).
Results: A total of 714 studies were published in CARJ, of which 181 were original research publications that were cited a total of 1517 times. Twelve original research studies were uncited, while the most-cited one was cited 58 times. Sample size (r=0.177, p=0.017) and number of references (r=0.164, p=0.028) demonstrated statistically significant positive correlations with citation rate. Number of authors, study design, setting, statistically significant results, and funding were not associated with citation rate. 
Conclusion: Only a very small number of original research studies published at the CARJ remained uncited five or more years after the publication. Sample size and number of references were the only identified predictors of citation rate in CARJ.

Predictors of Citation Rate in Original Research CARJ Publications