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Table 2 Summary Statistics of the Main Variables

From: The impact of PM2.5 on mortality in older adults: evidence from retirement of coal-fired power plants in the United States

 

Full Sample

Treated Counties

Control Counties

Mean

S.D.

Mean

S.D.

Mean

S.D.

Age-Adjusted Mortality Rate

423.0

68.99

444.4

68.13

420.8

68.70

Male Age-Adjusted Mortality Rate

458.2

97.15

485.7

96.00

455.4

96.83

Female Age-Adjusted Mortality Rate

400.4

75.74

419.4

72.24

398.4

75.83

Mortality Rate 65–75

193.9

54.82

206.4

54.53

192.6

54.69

Mortality Rate 75+

694.3

118.5

726.5

114.2

691.0

118.4

PM2.5 (μg/m3)

12.04

3.782

14.02

4.059

11.84

3.693

Temperature (°F)

59.46

16.89

59.53

15.08

59.45

17.07

Dew Point (°F)

47.86

16.32

47.77

14.78

47.87

16.47

Barometric Pressure (Hg)

29.31

0.790

29.20

0.417

29.32

0.818

Median Household Income ($1000)

41.60

7.045

40.42

4.705

41.72

7.232

Poverty Rate (%)

15.61

4.087

15.81

4.466

15.59

4.046

Observations

8274

 

770

 

7504

 
  1. Notes: All variables are measured at the county monthly level. We use the age structure in the 2010 Census to calculate the age-adjusted mortality rates. Mortality rate is reported as deaths per 100,000 people