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Table 1 Data of air pollutants, weather conditions, and deaths from PHD from 2013 to 2017

From: Associations between short-term exposure to gaseous pollutants and pulmonary heart disease-related mortality among elderly people in Chengdu, China

 

Mean

SD

Min.

25%

50%

75%

Max.

IQR

SO2 (μg/m3)

21.6

10.5

6.0

14.0

20.0

27.0

71.0

13.0

NO2 (μg/m3)

41.5

13.2

13.0

32.0

39.0

49.0

89.0

17.0

CO (μg/m3)

1124.2

790.2

425.0

787.0

987.0

1285.0

16,608.0

498.0

O3-8h (μg/m3)

92.4

49.6

11.0

54.0

82.0

128.0

285.0

74.0

PM2.5 (μg/m3)

70.5

48.9

9.0

36.0

56.0

89.0

372.0

53.0

Temperature (°C)

17.0

7.2

−1.9

10.3

17.9

23.2

30.0

12.9

Humidity (%)

77.7

9.7

41.0

72.0

78.0

85.0

98.0

13.0

AP (hpa)

951.7

7.4

933.1

945.6

951.2

957.4

977.3

11.8

Deaths from PHD

30.1

16.7

4

19

25

37

109

18

Age groups (year)

 60–69

3.3

2.6

0

2

3

4

18

2

 70–79

8.8

5.5

0

5

7.5

11

44

6

 80–89

13.5

8.0

1

8

11

17

56

9

 90–

4.5

3.7

0

2

4

6

25

4

Gender

 Male

15.9

9.6

1

10

13

19

69

9

 Female

14.2

8.2

1

9

12

18

57

9

Marital status

 Married

15.0

8.8

1

9

13

18

63

9

 Alternative statusa

15.1

9.1

1

9

13

18

67

9

  1. aAlternative marital statuses include widowed, divorced, and never married
  2. Abbreviations: SO2 sulfur dioxide, NO2 nitrogen dioxide, CO carbon monoxide, O3-8h daily eight-hour mean concentration of O3, PM2.5 particulate matter less than 2.5 μm in aerodynamic diameter, AP atmospheric pressure, PHD pulmonary heart disease, SD standard deviation, IQR inter-quartile range