Table 3. Summary of the primary analysis correlation findings between the citation numbers and the various characteristics for the 50 most-cited survey research publications in the neurosurgical literature.

Features	R-Value	P-Value
Articles’ age in years	0.2255	0.1154
Articles’ publishing journals	0.1762	0.2209
Articles’ journals IF	0.2265	0.1137
Articles’ number of Authors	0.1436	0.3198
Articles’ number of centres	0.12	0.4065
Articles’ number of specialties	0.0878	0.5443
Articles’ number of countries	0.0913	0.5283
Articles’ first author’s countries	0.0548	0.7054
Participants’ numbers	0.3146	0.0261*
Participants’ response rates	0.0984	0.5351
Participants’ specialties	0.031	0.8308
Participants’ selection	0.0046	0.9747
Participants’ worldwide regions	0.1064	0.4621
Questionnaires’ number of items	0.1128	0.4503
Questionnaires’ subspecialties	0.0185	0.8985
Questionnaires’ categories	0.2705	0.0574