Table 3

Logistic regression models of invasive pneumococcal disease (IPD) risk and IPD with pneumonia in relation to occupational exposure to vapours and gases, inorganic dust, silica dust, fumes, silica dust and organic dust during the year preceding the index date (onset of IPD)

Occupational exposures	IPD
	All IPD (n=4438)			IPD with pneumonia (n=3143)
	N	OR	95%	N	OR	95%
Fumes
Any exposure	836	1.11	1.01 to 1.21	611	1.17	1.06 to 1.30
Low*	780	1.07	0.97 to 1.17	560	1.1	0.98 to 1.23
High*	56	2.4	1.72 to 3.36	51	2.71	1.89 to 3.89
Inorganic dust
Any exposure*	1024	1.1	0.99 to 1.21	735	1.26	1.14 to 1.39
Low*	990	1.09	0.98 to 1.20	710	1.08	0.96 to 1.22
High*	34	1.46	0.96 to 2.21	25	1.51	0.93 to 2.44
Silica dust
Any exposure*	208	1.33	1.11 to 1.58	144	1.33	1.08 to 1.64
Low*	186	1.3	1.08 to 1.56	128	1.32	1.05 to 1.65
High*	22	1.55	0.93 to 2.57	16	1.41	0.78 to 2.54
Vapours and gases
Any exposure*	963	0.96	0.87 to 1.06	693	1.07	0.97 to 1.18
Low*	886	0.92	0.83 to 1.02	628	0.91	0.80 to 1.03
High*	77	1.93	1.44 to 2.57	65	2.19	1.59 to 3.03
Organic dust
Any exposure*	362	0.93	0.81 to 1.05	246	0.92	0.80 to 1.06
Low*	347	0.92	0.81 to 1.05	237	0.85	0.73 to 1.00
High*	15	1.12	0.60 to 2.09	9	1.02	0.47 to 2.21
Any exposure†	1765	1.09	1.01 to 1.18	1269	1.08	0.99 to 1.19

The exposure is defined by job–exposure matrix.
*Matched for gender, age and place of residency, and adjusted for educational level, ethanol abuse, and diagnoses of chronic obstructive pulmonary disease (COPD), asthma and diabetes and any other occupational exposures.
†Matched for gender, age and place of residency, and adjusted for educational level, ethanol abuse, and diagnoses of COPD, asthma and diabetes.