Table 1. Summary of the median (range) results for several predictors as well as their correlation analysis with citation numbers.

*P-values ≤0.05 are significant.

IF: impact factor

Parameter	Median (range)	R-value	P-value
Study population	115 (8–1578)	0.226	0.024*
Trial duration (months) [N = 82]	30 (7–113)	−0.0559	0.6179
Duration from publication (years)	13 (2–43)	0.0688	0.4964
Journal’s IF	14.9 (1.6–74.4)	0.4085	<0.0001*
Number of authors	14 (3–69)	0.0135	0.8939
Number of centers	10 (1–58)	0.0782	0.4393
Number of countries	1 (1–14)	0.1901	0.0582
Number of references	30 (9–60)	0.0238	0.8142