Table 1.

Detailed search strategy for primary literature search. IPF, idiopathic pulmonary fibrosis; OSA, obstructive sleep apnea.

Database	Search Query
PubMed (on PubMed.gov (accessed on 4 October 2021))	(“Idiopathic Pulmonary Fibrosis”[Mesh] OR “IPF”) AND (“Sleep Apnea, Obstructive”[Mesh] OR “OSA”)
PubMed Central (PMC)	“OSA AND IPF”
Scopus (on Scopus.com (accessed on 4 October 2021))	(TITLE-ABS-KEY (obstructive AND sleep AND apnea OR osa) AND TITLE-ABS-KEY (idiopathic AND pulmonary AND fibrosis OR ipf)) AND (LIMIT-TO (SUBJAREA, “MEDI”))
Embase (on Ovid)	1# idiopathic pulmonary fibrosis.mp. or exp fibrosing alveolitis 2# IPF.mp. 3# 1 OR 2 4# sleep apnea syndrome.mp. or exp sleep disordered breathing 5# (sleep adj3 (apnea or apnoea or hypopnea)).ti,ab. 6# OSA.mp. 7# 4 OR 5 OR 6 8# 3 AND 7