Table 3 Association of PM2.5 exposure and suicide events among major depressive disorder patients.

From: Association of short-term particulate matter exposure with suicide death among major depressive disorder patients: a time-stratified case-crossover analysis

 

1st quartile

2nd quartile

3rd quartile

4th quartile

P for trend

Lag0

Range (µg/m3)

0.0–16.1

16.1–23.1

23.1–32.0

32.0–113

 

Suicide events

755

762

766

768

 

aOR (95% CI)

1.00 (reference)

1.00 (0.89–1.12)

0.99 (0.88–1.12)

1.00 (0.87–1.14)

0.942

Lag1

Suicide events

731

761

759

800

 

aOR (95% CI)

1.00 (reference)

1.08 (0.96–1.21)

1.09 (0.96–1.23)

1.17 (1.03–1.34)

0.021

Lag2

Suicide events

744

783

762

762

 

aOR (95% CI)

1.00 (reference)

1.08 (0.96–1.21)

1.03 (0.91–1.17)

1.03 (0.91–1.17)

0.860

Lag3

Suicide events

727

776

777

771

 

aOR (95% CI)

1.00 (reference)

1.07 (0.96–1.21)

1.06 (0.94–1.20)

1.04 (0.91–1.18)

0.654

Lag0–3

Suicide events

757

747

773

774

 

aOR (95% CI)

1.00 (reference)

0.98 (0.87–1.11)

1.01 (0.89–1.15)

1.02 (0.89–1.17)

0.666

  1. Odds ratio estimated by conditional logistic regression adjusted for mean daily temperature, precipitation and holidays.
  2. PM particulate matter, aOR adjusted odds ratios, CI confidence interval.
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