Table 4

Characteristics (%) of 65 464 person-years during follow-up (1997–2013) of 4032 individuals (3340 men and 692 women) with smoking information provided at baseline by cumulated occupational organic dust exposure

	Person-years (%)
	Overall					Men					Women
	Organic dust exposure					Organic dust exposure					Organic dust exposure
	Low	Intermediate-low	Intermediate-high	High	Total	Low	Intermediate-low	Intermediate-high	High	Total	Low	Intermediate-low	Intermediate-high	high	Total
	0.06–6.05 mg/m³-year	>6.05–12.39 mg/m³-year	>12.39–21.35 mg/m³-year	>21.35–107.87 mg/m³-year		0.06–6.05 mg/m³-year	>16.05–12.39 mg/m³-year	>12.39–21.35 mg/m³-year	>21.35–107.97 mg/m³-year		0.06–6.05 mg/m³-year	>16.05–12.39 mg/m³-year	>12.39–21.35 mg/m³-year	>21.35–107.97 mg/m³-year
Characteristics
	16 366 py (25% of total)	16 366 py (25% of total)	16 366 py (25% of total)	16 366 py (25% of total)	65 464 py	11 466 py (21% of total)	13 705 py (25% of total)	14 329 py (26% of total)	15 068 py (28% of total)	54 568 py	4900 py (45% of total)	2661 py (24% of total)	2037 py (19% of total)	1298 py (12% of total)	10 896 py
Age, years
19–29	22	31	28	17	24	26	33	28	17	26	13	20	21	20	17
30–49	66	61	65	71	66	64	59	65	71	65	73	68	66	69	70
50–63	12	8	7	12	10	10	8	7	12	9	14	12	13	11	13
Exposure source by industry*
Farming	19	44	50	53	41	23	44	50	51	43	12	43	52	69	34
Wood industry	61	36	30	27	39	57	35	30	28	36	71	42	32	14	50
Farming and wood industry	19	20	20	20	20	20	21	20	21	21	17	15	16	17	16
Ever smokers at baseline	55	46	42	43	46	53	45	41	43	45	60	49	48	39	53

*Exposure source reflects the percentage of person-years which originate from individuals who are overall solely exposed to farm work, solely exposed to woodwork or from a mixture of both farm work and woodwork.
py, person years.