Table 3.

Association between occupational exposure to pesticides and lung cancer incidence determined by PS-based methods

PS methods	Cases/Controls	HR (95% CI)	p-value
Matching for PS	36/4,112	1.749 (0.886–3.453)	0.107
Stratification into 5 strata by PS	116/6,813	2.838 (1.807–4.455)	< 0.001
Regression adjusted for PS
As a continuous term	123/7,348	1.652 (1.035–2.637)	0.035
As quintiles	123/7,348	1.851 (1.126–3.041)	0.015
Weighted model
IPTW	123/7,348	2.359 (1.737–3.204)	< 0.001

CI, confidence interval; HR, hazard ratio; IPTW, inverse probability-of-treatment weighting; PS, propensity score.