Table 3

Adjusted HRs for chronic kidney disease (CKD) and renal replacement therapy (RRT)

	Exposure	Covariate model	Adjusted HRs (95% CI)
	Exposure	Covariate model	Age <65 years	Age ≥65 years
CKD	Inorganic dust and fumes	Crude*	1.22 (1.11 to 1.33)	1.04 (1.00 to 1.09)
		Main†	1.15 (1.05 to 1.26)	1.01 (0.97 to 1.06)
		Extended‡	1.14 (1.04 to 1.25)	1.02 (0.98 to 1.07)
	Wood dust	Crude*	0.85 (0.68 to 1.05)	0.94 (0.86 to 1.04)
		Main†	0.85 (0.68 to 1.05)	0.99 (0.90 to 1.09)
		Extended‡	0.84 (0.68 to 1.05)	1.00 (0.90 to 1.10)
	Fibres	Crude*	1.05 (0.88 to 1.26)	0.94 (0.86 to 1.03)
		Main†	1.01 (0.85 to 1.21)	0.93 (0.85 to 1.02)
		Extended‡	0.99 (0.83 to 1.19)	0.93 (0.85 to 1.02)
RRT	Inorganic dust and fumes	Crude*	1.22 (1.06 to 1.40)	1.03 (0.92 to 1.16)
		Main†	1.17 (1.01 to 1.34)	1.00 (0.89 to 1.12)
		Extended‡	1.16 (1.01 to 1.33)	1.01 (0.90 to 1.13)
	Wood dust	Crude*	0.85 (0.61 to 1.18)	0.73 (0.55 to 0.97)
		Main†	0.85 (0.61 to 1.19)	0.77 (0.58 to 1.02)
		Extended‡	0.85 (0.61 to 1.19)	0.78 (0.59 to 1.03)
	Fibres	Crude*	1.02 (0.77 to 1.34)	0.92 (0.72 to 1.17)
		Main†	0.99 (0.75 to 1.30)	0.91 (0.72 to 1.16)
		Extended‡	0.97 (0.74 to 1.28)	0.92 (0.72 to 1.17)

*The crude model included only adjustment for age.
†The main model also included smoking status, smoking intensity and BMI.
‡The extended model also included diagnosed diabetes and hypertension.
BMI, body mass index; CKD, chronic kidney disease; RRT, renal replacement therapy.