eTable 2. Additional chronic conditions that were stated in the optional text boxes.

	Total study population		p-value*1	Post-COVID-19 (symptom duration ≥ 12 weeks)		p-value*1
	No symptoms/ symptoms < 12 weeks n = 739	Symptoms ≥ 12 weeks (post-COVID-19) n = 720		Not hospitalized n = 588	Hospitalized n = 127
Allergies	16 (2.2)	16 (2.2)	1.0	16 (2.7)	0 (0)	0.090*2
Thyroid disorder	20 (2.7)	42 (5.8)	0.004	36 (6.1)	6 (4.7)	0.679
Skin lesions	5 (0.7)	17 (2.4)	0.009	15 (2.6)	1 (0.8)	0.329*2
Orthopedic symptoms	11 (1.5)	18 (2.5)	0.191	12 (2.0)	6 (4.7)	0.110*2
Neurological symptoms	7 (0.9)	9 (1.3)	0.623	5 (0.9)	4 (3.1)	0.058*2
Headache	8 (1.1)	11 (1.5)	0.453	11 (1.9)	0 (0)	0.228*2
Other chronic conditions	28 (3.8)	30 (4.2)	0.789	21 (3.6)	9 (7.1)	0.086

Absolute and relative frequencies are presented as n (%) unless otherwise indicated. Information on hospitalization was missing for five patients in the post-COVID-19 group.

*¹ Chi-square tests were used to calculate p-values unless otherwise indicated. *² Fisher’s exact test.