Table 1.
Grey incidence assessment between mortality and associated factors.
| Mortality | D-GRG (γ) | BA-GRG (ϵ±) |
SS-GRG ( )
|
Rank |
|---|---|---|---|---|
| Ambient air pollution exposure (PM 2.5 ) | ||||
| Asthma | 0.985 | (0.994) | 0.990 | 1st |
| COPD | 0.870 | (0.874) | 0.872 | 4th |
| Stroke | 0.890 | (0.895) | 0.893 | 3rd |
| IHD | 0.979 | (0.984) | 0.982 | 2nd |
| Ozone exposure (O 3 ) | ||||
| Asthma | 0.896 | (0.903) | 0.900 | 2nd |
| COPD | 0.878 | (0.889) | 0.884 | 4th |
| Stroke | 0.875 | (0.892) | 0.884 | 3rd |
| IHD | 0.980 | (0.992) | 0.986 | 1st |
| Household air pollution exposure (PM 2.5 ) | ||||
| Asthma | 0.979 | (0.997) | 0.988 | 1st |
| COPD | 0.898 | (0.901) | 0.900 | 3rd |
| Stroke | 0.889 | (0.903) | 0.896 | 4th |
| IHD | 0.949 | (0.961) | 0.955 | 2nd |
D-GRG (γ), Deng grey relational gradient; BA-GRG (ϵ±), bidirectional absolute grey relational gradient; SS-GRG (p), second synthetic grey relational gradient; COPD, chronic obstructive pulmonary disease; IHD, ischemic heart disease. Inverse relationships are indicated by values enclosed in round parenthesis. SS-GRG is estimated without the use of signs. Response variable: mortality from asthma, COPD, stroke, and IHD.