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Table 1 Characteristics of the study population (n = 175,265)

From: The effect of ambient particle matters on hospital admissions for cardiac arrhythmia: a multi-city case-crossover study in China

 

No. (%)

Demographic

 Gender

  Male

88,760 (50.6%)

  Female

86,505 (49.4%)

 Age

   < 65 years old

112,403 (64.1%)

   ≥ 65 years old

62,862 (35.9%)

Comorbid health condition

 Hypertension

  With

64,786 (37.0%)

  Without

110,479 (63.0%)

 Diabetes

  With

19,947 (11.4%)

  Without

155,318 (88.6%)

 Hyperlipidemia

  With

23,957 (13.7%)

  Without

151,308 (86.3%)

 Congestive heart failure

  With

18,529 (10.6%)

  Without

156,736 (89.4%)

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Environmental Health

ISSN: 1476-069X