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Table 2 Individual perceptions of PM2.5 pollution (mean ± SD)

From: Associations between individual perceptions of PM2.5 pollution and pulmonary function in Chinese middle-aged and elderly residents

Perception factors

Total (N = 400)

Age: 41–65 (N = 195)

Age: 66–90 (N = 205)

Concern

5.7 ± 2.8

6.1 ± 2.6

5.2 ± 3

Severity of air pollution

5.9 ± 2.3

6.4 ± 2.1

5.3 ± 2.4

Severity of health effects

6.8 ± 2.4

7.2 ± 2.2

6.3 ± 2.6

Knowledge

6.6 ± 2.5

7.1 ± 2.2

6 ± 2.6

Familiarity

6.6 ± 2.4

7 ± 2.2

6.2 ± 2.6

Dread of risk to oneself

6.9 ± 2.5

7.3 ± 2.2

6.5 ± 2.6

Dread of risk to others

6.9 ± 2.4

7.3 ± 2.1

6.5 ± 2.6

Controllability

5 ± 2.8

5.4 ± 2.7

4.6 ± 2.8