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Table 1 Descriptive statistics of exposure data and study subjects split by all pneumonia and community deaths from pneumonia

From: Has the short-term effect of black smoke exposure on pneumonia mortality been underestimated because hospitalisation is ignored: findings from a case-crossover study

 

Mean

S.D.

Median

IQR

Min

Max

Daily Ave Air Temp (°C)

9.4

5.1

9.4

8

-12.7

24.48

Daily Ave BS (μgm-3)

12.7

13.3

9

10

1

194

Lag 1–6 days Ave BS (μgm-3)

12.9

10.8

9.3

9.5

1

95.2

Lag 7–12 days Ave BS (μgm-3)

13

11.1

9.5

9.6

1

95.2

Lag 13–18 days Ave BS (μgm-3)

13.1

11.3

9.5

9.7

1

95.2

Lag 19–24 days Ave BS (μgm-3)

13.1

11.2

9.5

9.5

1

95.2

Lag 25–30 days Ave BS (μgm-3)

13

11.2

9.5

9.3

1

95.2

Lag 1–30 days Ave BS (μgm-3)

13.2

9.2

10.1

9.3

2.7

73.2

Age (CDP)

79.13

12.6

82

12

0

108

Age (Non-CDP)

79.21

11.92

81

13

0

108

Age (AP)

79.15

12.2

81

13

0

108

 

Gender

Age Grouped

 

Categories

Male

Female

<80

≥80

Total

CDP only Subjects (%)

3,409 (45.2)

4,127 (54.8)

3,064 (40.7)

4,472 (59.3)

7,536 (100)

Non-CDP only Subjects (%)

3,166 (48.2)

3,644 (46.9)

3,109 (50.4)

3,701 (45.3)

6,810 (47.5)

All Pneumonia Subjects (%)

6,575 (45.8)

7,771 (54.2)

6,173 (43.0)

8,173 (57.0)

14,346 (100)

  1. BS = Black Smoke.