Table 4.

Number of side effects in PAH/CTEPH patients after the first and second doses of vaccination against COVID-19.

Number of Side Effects	After First Dose (n = 200) n (%)	After Second Dose (n = 197) n (%)	p-Value
0	78 (39)	119 (59.5)	0.001 *
1	73 (36.5)	43 (21.5)
2	24 (12)	22 (11)
3	13 (6.5)	10 (5)
4	9 (4.5)	4 (2)
≥5	3 (1.5)	2 (1)

PAH—pulmonary arterial hypertension, CTEPH—chronic thromboembolic pulmonary hypertension; * Mann-Whitney U test.