Table 7.

Variance components of department-based random and mixed models.

Exposure component	Variance
		BC	BW	WWBSP	WWWSP	WWTOT	Total variance
Dust	${\sigma }_{\mathrm{r}\mathrm{a}\mathrm{n}\mathrm{d}\mathrm{o}\mathrm{m}}^2$	0.10	0.44	0.07	0.35	0.42	0.97
	DEP ${\sigma }_{\mathrm{m}\mathrm{i}\mathrm{x}\mathrm{e}\mathrm{d}}^2$	0.08	0.30	0.03	0.35	0.38	0.76
	DEP %	21	32	66	0	11	21
	TASK ${\sigma }_{\mathrm{m}\mathrm{i}\mathrm{x}\mathrm{e}\mathrm{d}}^2$	0.08	0.30	0.02	0.35	0.37	0.75
	TASK %	6	31	72	0	13	22
Endotoxin	${\sigma }_{\mathrm{r}\mathrm{a}\mathrm{n}\mathrm{d}\mathrm{o}\mathrm{m}}^2$	0.25	0	1.29	1.00	2.29	2.54
	DEP ${\sigma }_{\mathrm{m}\mathrm{i}\mathrm{x}\mathrm{e}\mathrm{d}}^2$	0.31	0	0.52	0.95	1.47	1.78
	DEP %	0	0	60	5	36	30
	TASK ${\sigma }_{\mathrm{m}\mathrm{i}\mathrm{x}\mathrm{e}\mathrm{d}}^2$	0.32	0.00	0.57	0.97	1.53	1.85
	TASK %	0	98	56	4	33	27
Fungal spores	${\sigma }_{\mathrm{r}\mathrm{a}\mathrm{n}\mathrm{d}\mathrm{o}\mathrm{m}}^2$	0.13	0.39	0.56	0.97	1.53	2.06
	DEP ${\sigma }_{\mathrm{m}\mathrm{i}\mathrm{x}\mathrm{e}\mathrm{d}}^2$	0.15	0.16	0.27	0.99	1.26	1.58
	DEP %	0	58	52	0	18	23
	TASK ${\sigma }_{\mathrm{m}\mathrm{i}\mathrm{x}\mathrm{e}\mathrm{d}}^2$	0.12	0.15	0.26	0.96	1.23	1.50
	TASK %	9	62	53	1	20	27
Resin acids	${\sigma }_{\mathrm{r}\mathrm{a}\mathrm{n}\mathrm{d}\mathrm{o}\mathrm{m}}^2$	0.26	1.61	0.46	0.67	1.13	3.00
	DEP ${\sigma }_{\mathrm{m}\mathrm{i}\mathrm{x}\mathrm{e}\mathrm{d}}^2$	0.06	0.31	0.12	0.67	0.79	1.17
	DEP %	76	81	73	0	30	61
	TASK ${\sigma }_{\mathrm{m}\mathrm{i}\mathrm{x}\mathrm{e}\mathrm{d}}^2$	0.05	0.24	0.18	0.67	0.85	1.14
	TASK %	79	85	60	0	24	62
Monoterpenes	${\sigma }_{\mathrm{r}\mathrm{a}\mathrm{n}\mathrm{d}\mathrm{o}\mathrm{m}}^2$	0.56	2.34	0.75	0.56	1.31	4.22
	DEP ${\sigma }_{\mathrm{m}\mathrm{i}\mathrm{x}\mathrm{e}\mathrm{d}}^2$	0.25	0.22	0.66	0.64	1.30	1.78
	DEP %	54	90	12	0	1	58
	TASK ${\sigma }_{\mathrm{m}\mathrm{i}\mathrm{x}\mathrm{e}\mathrm{d}}^2$	0.29	0.21	0.80	0.57	1.37	1.87
	TASK %	49	91	0	0	0	56

${\sigma }_{\mathrm{r}\mathrm{a}\mathrm{n}\mathrm{d}\mathrm{o}\mathrm{m}}^2$: exposure variance of random effects model; DEP ${\sigma }_{\mathrm{m}\mathrm{i}\mathrm{x}\mathrm{e}\mathrm{d}}^2$: exposure variance of department-based mixed effects model; DEP %: variance explained by fixed effects in department-based model; TASK ${\sigma }_{\mathrm{m}\mathrm{i}\mathrm{x}\mathrm{e}\mathrm{d}}^2$: exposure variance of task-based mixed effects model; TASK %: variance explained by fixed effects in task-based model BC: between company; BW: between worker; WW_BSP: within worker variance between sample periods; WW_WSP: within worker variance within sample periods; WW_TOT: sum of WW_BSP and WW_WSP.