BMC Geriatrics

Table 3 The relationship between air quality and the depressive symptoms trajectories

From: Trajectories of depressive symptom and its association with air pollution: evidence from the Mr. OS and Ms. OS Hong Kong cohort study

Baseline variable	Increase			Late increase
Baseline variable	OR	95% CI	P^a	OR	95% CI	P^a
Model I^a
The concentration of PM ₁₀^c	1.03	0.89,1.18	0.707	1.00	0.90,1.12	0.932
The concentration of NO₂^c	0.93	0.81,1.07	0.326	0.92	0.83,1.03	0.146
Model II^b
The concentration of PM ₁₀^c	1.07	0.88,1.29	0.504	1.02	0.89,1.17	0.775
The concentration of NO₂^c	1.00	0.82,1.21	0.978	0.94	0.82,1.09	0.429

Model I^a: Model I unadjusted
Model II^b: Model II adjusted for the confounding factors such as age, marital status, quality of life, bmi, the number of chronic illnesses, BMI index, physical activity and cognitive function
^cWe utilized the z-score method to standardize the air quality data

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ISSN: 1471-2318

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