Table 1.

Proportion of article types from 2013 to 2021

Article type	2013	2014	2015	2016	2017	2018	2019	2020	2021	P
Case report	3/61 (4.9%)	1/47 (2.1%)	3/56 (5.4%)	5/60 (8.3%)	1/67 (1.5%)	3/75 (4.0%)	8/71 (11.3%)	10/78 (12.8%)	2/68 (2.9%)	0.162
Case series	2/61 (3.3%)	0/47 (0%)	1/56 (1.8%)	1/60 (1.7%)	1/67 (1.5%)	3/75 (4.0%)	3/71 (4.2%)	5/78 (6.4%)	1/68 (1.5%)	0.244
Narrative review	3/61 (4.9%)	2/47 (4.3%)	0/56 (0%)	1/60 (1.7%)	2/67 (3.0%)	4/75 (5.3%)	2/71 (2.8%)	9/78 (11.5%)	2/68 (2.9%)	0.182
Original research	51/61 (83.6%)	43/47 (91.5%)	49/56 (87.5%)	50/60 (83.3%)	61/67 (91.0%)	59/75 (78.7%)	52/71 (73.2%)	47/78 (60.3%)	56/68 (82.4%)	< 0.0001
Systematic/scoping review	2/61 (3.3%)	1/47 (2.1%)	3/56 (5.4%)	3/60 (5.0%)	2/67 (3.0%)	6/75 (8.0%)	6/71 (8.7%)	7/78 (9.0%)	7/68 (10.3%)	0.015

Bolded values are statistically significant