Table 4.

Summary of COVID-19 related outcomes of studies recruiting more than 100 AARD patients.

First author	Number of participants with AARD		Rate of severe disease, %a	Rate of hospitalization, %	Rate of mortality, %
Pablos et al [4]	228	13.5		71.1	18.1
French RMD COVID-19 cohort [34]	694	12.5		37.0	8.3
Strangfeld et al [37]	3729	N/A		49.0	10.5
Gianfrancesco et al [13]	600	N/A		46.0	9.0
Attauabi et al [15]	184	N/A		41.8	13.6
Marques et al [31]	334	N/A		33.0	8.4
Scirè et al [19]	232	N/A		69.8	19.0
Freites Nuñez et al [20]	123	N/A		43.9	22.2
Xu et al [22]	1138b	N/A		58.0	7.0
Akiyama et al [25]	2766b	N/A		35.0	6.6

AARD: autoimmune/auto-inflammatory rheumatic diseases N/A: Not applicable.

^aWhere applicable, different disease severity classification criteria were used.

^bSystematic review and meta-analysis.