Table 2. Summarization of each variable in the causal model.

Variables	Abbreviations in the model	Mean ± SD	95% CIs	Range
Perceived indoor environmental problems	IEQ	3.12 ± 2.34	2.96–3.27	0–8
Working condition problems	WC	2.06 ± 1.22	1.98–2.14	0–4
Sick house syndrome	SHS	1.07 ± 1.26	0.99–1.16	0–6
Occupational stress	OS	3.78 ± 2.69	3.61–3.96	0–10
Work productivity	WP	2.21 ± 2.11	2.07–2.35	0–6
Well-being	WB	2.10 ± 1.69	1.98–2.21	0–5

SD: standard deviation; 95% CI: 95% confidence interval.