Borm, P J A; Jetten, M; Hidayat, S; van de Burgh, N; Leunissen, P; Kant, I; Houba, R; Soeprapto, H

Table 4

Results of multiple linear regression analysis including smoking, exposure to glue (possibly formaldehyde), duration of exposure, age, and current exposure (three categories) as independent variables for the lung function variables and nasal cellularity (in the outcomes (total adusted R² or adjusted βs) a differentiation is made between male and female workers)

	Years of exposure		Current exposure
Lung function	R²	β Adjusted	R²	β Category I	β Category II	β Category III
p<0.05; *p<0.01.
FEV₁ (l):
Men	0.341	−0.199*	0.353	0.079	0.177**	0.177*
Women	0.248	−0.042	0.262	NS	NS	NS
FVC (l):
Men	0.296	−0.115**	0.315	0.05	0.134	0.127
Women	0.127	0.02	0.140	0.153	0.132	0.076
FEV₁/FVC (%):
Men	0.058	−0.140**	0.068	0.07	0.138	0.119
Women	0.087	−0.073	0.100	−0.09	−0.01	−0.03
MEF (l/s):
Men	0.083	−0.141**	0.090	0.028	0.095	0.050
Women	0.055	−0.012	0.073	0.167	0.195	0.170
PEF (l/s):
Men	0.121	−0.080	0.125	0.219**	0.191	0.143
Women	0.063	0.022	0.097	0.290**	0.256**	0.234*
Resonance frequency:
Men	0.068	0.053	0.099	−0.505*	−0.538*	−0.416*
Women	0.113	0.072	0.123	−0.300**	−0.294**	−0.147
Average resistance (R):
Men	0.061	−0.013	0.072	−0.220	−0.250	0.220**
Women	0.037	−0.001	0.045	0.202	0.176	0.030
Reactance (X):
Men	0.025	0.033	0.051	0.386*	0.453*	0.295*
Women	0.100	−0.072	0.111	0.308**	0.256	0.177**
Frequency dependence:
Men	0.010	−0.117	0.028	0.340**	0.330**	0.250**
Women	0.029	−0.059	0.041	0.020	0.030	0.040

Respiratory symptoms, lung function, and nasal cellularity in Indonesian wood workers: a dose-response analysis

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