Reference questions	Variable description	Type of variable	Missing values, “other”, “not applicable” responses	Model
Q1.1 – Q1.8	9 variables on the relevance of different activities to WFH	Continuous	“Not applicable” responses treated as “not at all”	WFH
Q2	Frequency of headphone use	Continuous	None	WFH
Q4.1 – Q4.9	9 variables on the perceived dominance of different sound sources	Continuous	“Not applicable” responses removed listwise. Only for Q4.5 – Q4.6: “Not applicable” responses treated as “not at all”	WFH
Q5.1 – Q5.3	3 variables on the perceived dominance of components in window view	Continuous	“Not applicable” responses removed listwise	WFH
Q8.1 – Q8.8	Comfort and content scores	Continuous	None	WFH
Q10.1 – Q10.9	9 variables on the perceived dominance of different sound sources	Continuous	“Not applicable” responses removed listwise. Only for Q10.5 – Q10.6: “Not applicable” responses treated as “not at all”	REL
Q11.1 – Q11.3	3 variables on the perceived dominance of components in window view	Continuous	“Not applicable” responses removed listwise	REL
Q14.1 – Q14.8	Comfort and content scores	Continuous	None	REL
Q15	House ownership	Dichotomous (0 = Rent – not owned, 1 = Owned)	“Other” responses removed listwise	WFH / REL
Q16	House size	Dichotomous (0 = ≤ 80 m2; 1 = > 80 m2)	None	WFH / REL
Q17	Housing type	Dummy coded: Semi-detached or terraced house; Apartment block [ref. Detached single family]	None	WFH / REL
Q3, Q18	Quietness of area outside the room where WFH	Dichotomous (0 = noisy; 1 = quiet)	Missing values removed listwise	WFH
Q9, Q18	Quietness of area outside the room where WFH	Dichotomous (0 = noisy; 1 = quiet)	Missing values removed listwise	REL
Q19	Children presence at home	Dichotomous (0 = no children present; 1 = children present)	None	WFH / REL
Q20	Number of people present at home	Continuous	None	WFH / REL
Q21	Mechanical ventilation	Dichotomous (0 = no mechanical ventilation; 1 = mechanical ventilation)	None	WFH / REL
Q22	Air system for heating	Dichotomous (0 = no air system; 1 = air system for heating)	None	WFH / REL
Q23	Air system for cooling	Dichotomous (0 = no air system; 1 = air system for cooling)	None	WFH / REL
Q25	Type of urban area	Dichotomous (0 = suburban, rural; 1 = urban)	None	WFH / REL
Q26	Noise sensitivity	Continuous	None	WFH / REL
Q27	Well-being	Continuous	None	WFH / REL
Q28	Age	Continuous	None	WFH / REL
Q29	Gender	Dichotomous (0 = male; 1 = female)	“Other” responses removed listwise	WFH / REL