Table 3.

Relative risks (HRs) for lung cancer in relation to duration of exposure to textile industry agents

Agent/years exposed	Cases	Non-cases	HR*	(95% CI)
Wool dust
0	530	2736	1.0
1–4	12	56	0.9	(0.5 to 1.7)
5–9	10	111	1.6	(0.7 to 3.2)
10–19	25	38	1.1	(0.7 to 1.8)
≥20	51	244	1.0	(0.7 to 1.4)
Silk
0	595	3022	1.0
1–9	9	37	1.3	(0.6 to 2.8)
≥10	24	126	1.0	(0.7 to 1.6)
Synthetic fibre dust
0	360	1922	1.0
1–4	23	128	0.9	(0.6 to 1.5)
5–9	26	110	1.5	(0.9 to 2.3)
10–19	71	361	1.1	(0.8 to 1.5)
≥20	148	664	1.2	(0.9 to 1.4)
Solvents
0	543	2727	1.0
1–4	16	83	1.2	(0.7 to 2.0)
5–9	17	86	1.2	(0.7 to 2.2)
10–19	23	139	0.9	(0.6 to 1.4)
≥20	29	150	1.2	(0.8 to 1.9)
Acids, bases, caustics
0	578	2922	1.0
1–4	12	43	1.9	(0.9 to 3.7)
5–9	9	47	1.3	(0.6 to 2.7)
10–19	17	86	1.1	(0.7 to 1.9)
≥20	12	87	0.8	(0.4 to 1.5)
Dyes
0	614	3089	1.0
1–9	4	30	1.0	(0.3 to 3.0)
≥10	10	66	0.9	(0.4 to 1.7)
Resins, monomers, coatings
0	619	3097	1.0
1–9	5	31	1.0	(0.4 to 2.6)
≥10	4	57	0.4	(0.1 to 1.1)
Metals
0	585	2958	1.0
1–4	8	46	0.9	(0.4 to 2.0)
5–9	9	41	1.5	(0.7 to 3.1)
10–19	12	58	1.0	(0.5 to 1.9)
≥20	14	82	1.1	(0.6 to 2.0)
Lubricants
0	204	1210	1.0
1–4	33	174	1.0	(0.7 to 1.5)
5–9	45	157	1.8	(1.2 to 2.7)
10–19	105	495	1.2	(0.9 to 1.6)
≥20	241	1149	1.0	(0.8 to 1.3)
Silica dust
0	623	3177	1.0
1–9	1	2	4.5	(0.3 to 59)
≥10	4	6	3.5	(1.0 to 13)
Formaldehyde
0	626	3174	1.0
1–9	0	6	0	–
≥10	2	5	2.1	(0.4 to 11)

^*HR adjusted for age, smoking.