Table 3 HRs and 95%cis of depressive symptoms and glaucoma associated with the volume and intensity of PA and long-term exposure to PM2.5.

From: PM2.5 exposure modifies the association of physical activity with depressive symptoms and glaucoma in middle aged and elderly Chinese

Exposure

HR (95%CI)a

Depressive symptoms

Glaucoma in participants with depressive symptoms

Glaucoma in participants without depressive symptoms

PA volume (MET-h/day)

   

Quartile 1 (≤ 4.10)

1.00

1.00

1.00

Quartile 2 (>4.10–9.87)

0.96 (0.88–1.04)

1.19 (0.81–1.75)

1.42 (0.98–2.05)

Quartile 3 (>9.87–25.17)

0.88 (0.80–0.96)

1.31 (0.85–2.02)

0.84 (0.54–1.28)

Quartile 4 (>25.17)

0.83 (0.79–0.87)

0.95 (0.65–1.41)

0.98 (0.69–1.41)

Average PA intensity (MET)

   

Light (<3.0)

1.00

1.00

1.00

Moderate (3.0-<6.0)

0.87 (0.80–0.96)

1.38 (0.81–2.35)

1.05 (0.68–1.63)

Vigorous (>6.0)

0.85 (0.73–0.94)

0.99 (0.51–1.94)

1.07 (0.62–1.88)

PM2.5 level (µg/m3)

   

Low (<35)

1.00

1.00

1.00

High (≥ 35)

1.80 (1.66–1.95)

1.89 (1.24–2.88)

1.67 (1.18–2.37)

  1. aCox proportional hazard model, and adjusted for age, sex, education level, marital status, residence, body mass index, disability in activities of daily living, chronic disease, smoking status, drinking status, living standard, heating fuel, cooking fuel, temperature, and PM2.5 (for the association with PA volume) or PA volume (for the association with PM2.5) or both PM2.5 and PA volume (for the association with PA intensity).
  2. Abbreviations: HRs, hazard ratios; CIs, confidence intervals; PA, physical activity; PM2.5, particulate matter with aerodynamic diameter < 2.5 μm; MET, metabolic equivalent; µg/m3, micrograms per cubic meter.
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