Table 3.

Percentage of flares during the pre-COVID-19 and post-COVID-19 vaccination periods

	Follow-up time (years or months)	Rheumatoid arthritis			Psoriatic arthritis
		Patients (n)*	Flares (n)	%	Patients (n)*	Flares (n)	%
Prevaccination	1	712	104	14.6	354	45	12.7
	From 12th month to 6th month prior to vaccination	317	32	10.1	166	19	11.4
	From 6th month to vaccination date	570	72	12.6	264	27	10.2
	From 6th month to 3rd month prior to vaccination	199	26	13.0	83	10	12.0
	From 3rd month to vaccination date	359	46	12.8	172	17	9.8
Post vaccination	At 6 months post vaccination	593	84	14.2	253	25	9.9
	From time to vaccination to 3rd month	410	52	12.7	178	18	10.1
	From 3rd to 6th month post vaccination	231	32	14.2	86	7	8.1

Thick line indicates the time of COVID-19 vaccination.

*Number of patients in each period who had at least one prior review.