Table 3

Information on cases and controls for each disease of interest: total numbers, proportion in each crystalline silica exposure category, mean age, sex, and race

			Proportion in each silica exposure category
Disease	Case/control	Total deaths	Low/no	Medium	High	Super high	Mean age at death (y)	Male (%)	Caucasian (%)
COPD, chronic obstructive pulmonary disease.
Silicosis	Cases	1237	49.2	18.0	26.6	6.2	74	97	86
	Controls	6185	81.9	10.9	6.8	0.4
Lung cancer	Cases	396481	86.9	6.9	5.9	0.3	68	78	90
	Controls	1964005	86.8	7.8	5.2	0.2
Stomach cancer	Cases	35221	86.8	7.6	5.4	0.2	70	75	84
	Controls	176079	86.6	7.9	5.2	0.3
Oesophageal cancer	Cases	28245	86.3	7.0	6.4	0.3	67	85	81
	Controls	141209	85.6	8.2	5.9	0.3
COPD	Cases	94922	85.1	8.6	6.0	0.3	73	77	95
	Controls	474564	86.4	8.7	4.7	0.2
Pulmonary tuberculosis	Cases	6570	78.2	11.7	9.5	0.6	68	80	66
	Controls	32843	83.5	9.7	6.5	0.3
Sarcoidosis	Cases	2036	93.3	3.6	2.9	0.2	54	48	39
	Controls	10165	90.4	4.7	4.7	0.2
Systemic sclerosis	Cases	2875	93.6	3.4	2.8	0.2	64	34	81
	Controls	14363	93.6	3.8	2.5	0.1
Systemic lupus erythematosus	Cases	3733	94.1	3.5	2.3	0.1	59	28	71
	Controls	18625	93.6	3.9	2.4	0.1
Rheumatoid arthritis	Cases	18335	89.5	7.1	3.2	0.2	74	48	93
	Controls	91660	90.8	6.0	3.0	0.2
All renal failure	Cases	279378	86.6	8.7	4.5	0.2	74	69	83
	Controls	1395726	86.4	8.8	4.6	0.2
Chronic renal failure	Cases	56521	86.6	8.8	4.4	0.2	74	68	77
	Controls	282492	86.2	8.9	4.7	0.2
Acute renal failure	Cases	47942	86.7	8.5	4.6	0.2	74	70	86
	Controls	239644	86.4	8.8	4.6	0.2
Chronic glomerulonephritis	Cases	12563	86.4	9.3	4.1	0.2	75	69	78
	Controls	62804	85.2	9.8	4.8	0.2
Membranous glomerulonephritis	Cases	194	88.6	5.7	5.7	0	66	77	86
	Controls	970	87.5	5.9	6.2	0.4