Table 2 The baseline characteristics of the study participants (continuous variables).

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

Variables

Median (P25, P75)

PA volume (MET-h/day)

9.9 (4.1, 23.0)

PA intensity (MET)

3.7 (3.3, 4.8)

PM2.5 (µg/m3)

47.8 (35.6, 61.7)

  1. P25, lower quartile; P75, upper quartile; PA, physical activity; MET, metabolic equivalents; PM2.5, particulate matter with aerodynamic diameter < 2.5 μm; µg/m3, micrograms per cubic meter.
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