Table 2.
Association between concurrent PM2.5 and the incidence rate of lung cancer for males.
| Male Baseline Rate = 47.63 | ||||
|---|---|---|---|---|
| Model 1 | Model 2 | |||
| Variables | β | 95% CI | β | 95% CI |
| PM2.5 | 4.83% *** | (3.36%, 6.09%) | 4.20% *** | (2.73%, 5.88%) |
| Log | 0.22 *** | (0.05, 0.38) | 0.30 *** | (0.14, 0.47) |
| Lat | −0.06 | (−0.25, 0.14) | −0.06 | (−0.26, 0.14) |
| Year 2007 | 4.96 | (−4.95, 14.87) | 4.69 | (−5.03, 14.41) |
| Year 2008 | 6.17 | (−3.64, 15.99) | 5.78 | (−3.85, 15.41) |
| Year 2009 | 6.86 | (−1.74, 15.47) | 6.15 | (−2.30, 14.60) |
| Year 2010 | 9.58 ** | (1.67, 17.49) | 8.22 ** | (0.42, 16.01) |
| Year 2011 | 11.80 *** | (3.99, 19.61) | 10.50 *** | (2.76, 18.24) |
| Year 2012 | 14.54 *** | (6.77, 22.3) | 13.53 *** | (5.77, 21.28) |
| Year 2013 | 12.87 *** | (5.25, 20.48) | 12.09 *** | (4.57, 19.61) |
| Year 2014 | 13.53 *** | (5.99, 21.06) | 12.30 *** | (4.85, 19.76) |
| Finance | −0.08 | (−0.37, 0.20) | ||
| Education | −0.37 | (−1.86, 1.11) | ||
| Construction | −0.40 | (−0.92, 0.12) | ||
| Population | 0.03 ** | (0.00, 0.07) | ||
| Urban-rural | 8.49 *** | (5.15, 11.83) | ||
** for p < 0.05, and *** for p < 0.01. With a 10 μg/m3 change in PM2.5, the change in the incidence rate relative to its baseline = (10 × coefficient for PM2.5)/baseline incidence rate (i.e., 47.63 per 100,000 people).