Study	Participant group (n)	Source of participants	History of diagnosis of SARS‐CoV‐2 infection	Inclusion criteria for post‐COVID‐19 condition participants
Pretorius 2022	PCC (80)	Self‐identified participants in South Africa registered in an online registry	Not reported	Self‐reported symptoms of PCC, defined as “recurring long‐term symptoms after you have recovered from acute COVID‐19”
Pretorius 2021	PCC (11)	Source unclear; possibly from self‐identified participants in South Africa registered in an online registry	Not reported	Symptoms of PCC and at least 2 months since acute COVID‐19. Unclear if self‐reported or medically diagnosed
	Control (13)	People attending clinic prior to SARS‐CoV‐2 outbreak	N/A as prior to SARS‐CoV‐2 outbreak	‐
Kruger 2022	PCC (99)	Self‐identified participants in South Africa registered in an online registry	Not reported	Self‐reported symptoms of PCC, defined as “recurring long‐term symptoms after you have recovered from acute COVID‐19”
	Control (29)	Described as "volunteers" recruited via a clinical practice	Not reported	‐
Laubscher 2023	PCC (91)	Described as "volunteers" recruited via a clinical practice	Not reported	Diagnosed based on symptoms and clinical examination. Methods not clearly described.
Turner 2023	PCC (40)	Self‐identified participants in South Africa registered in an online registry	Not reported	Self‐reported symptoms of PCC, defined as “recurring long‐term symptoms after you have recovered from acute COVID‐19”
	Control (20)	Described as "volunteers" recruited via a clinical practice	Not reported	‐
Abbreviations: N/A: not applicable; PCC: post‐COVID‐19 condition