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

Table 4 Regression analysis of pulmonary function outcomes on individual perception of PM_2.5 among residents aged 41–65 (N = 195)^a

	Severity of air pollution	Severity of health effects	Knowledge	Familiarity	Dread of risk to oneself	Dread of risk to others
PEF, L/s	0.18*	–	0.14	0.16	0.2*	0.22*
FEF_25%, L/s	–	−0.22	–	−0.23	−0.2	− 0.17
FEF_75%, L/s	0.14	0.2*	0.16	0.18*	0.24**	0.26**

^a: **P < 0.01, *P < 0.05
-: removed by stepwise regression selection
All initial models included age, education, average family income and history of respiratory disease, and then underwent stepwise regression selection

ISSN: 1471-2458