Table 1.

Assessment of data quality

Type of article	Article count	Case count extracted	Year of publication [median, range]	Quality metrica	Average total score	Low quality	Medium quality	High quality
Case Report	40	40	2009 [1983–2019]	19.15 ± 1.33	24	0	2	38
Case Series	13	20	2006 [1964–2015]	8 ± 1.63	13	0	10	3
Case Illustration	14	14	2015 [2003–2020]	13.79 ± 2.33	19.21	0	4	10
Letter to Editor	15	15	2015 [2006–2019]	15.6 ± 1.45	20.33	0	0	15
Correspondence	3	3	1996 [1995–2013]	13.33 ± 1.15	19.33	0	1	2
Clinical Vignette	2	2	2011 [2009–2013]	15.5 ± 0.43	19	0	0	2
Brief Communication	1	1	2008	19	24	0	0	1
Total	88	95	2009 [1964–2020]	NA	NA	0	17	71

^aCase series and all others were measured differently.