Table 2.
Relations between air pollution effect and city specific factors
| Variables | Regressions (95% CI) | ||
|---|---|---|---|
| 1 | 2 | 3 | |
| Mean PM10 (10 µg/m3) | −0.13* (−0.26 to −0.01) | −0.27* (−0.54 to −0.003) | −0.31* (−0.56 to −0.07) |
| Mean PM10×north indicator | — | 0.27 (−0.01 to 0.54) | 0.29* (0.03 to 0.54) |
| North (=1) | — | −2.81* (−5.27 to −0.35) | −2.91* (−5.15 to −0.68) |
| GDP per capita (¥10 000) | — | — | −0.05 (−0.16 to 0.06) |
| Workers in construction industry (%) | — | — | 6.67* (1.14 to 12.20) |
| Female population (%) | — | — | 5.80 (−19.14 to 30.73) |
| People aged ≥60 years (%) | — | — | 6.15 (−0.17 to 12.46) |
| No of observations (R2) | 38 (0.07) | 38 (0.25) | 38 (0.49) |
¥10 000 (£1169; $1456; €1377).
GDP=gross domestic product.