Table 4 Association of coarse particle 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)

0.0–12.7

12.7–17.6

17.6–24.6

24.6–492.3

 

Suicide events

755

769

756

771

 

aOR (95% CI)

1.00 (reference)

1.02 (0.91–1.16)

1.01 (0.88–1.15)

1.03 (0.88–1.19)

0.812

Lag1

Suicide events

738

751

773

789

 

aOR (95% CI)

1.00 (reference)

1.06 (0.93–1.19)

1.12 (0.98–1.28)

1.19 (1.03–1.38)

0.017

Lag2

Suicide events

760

759

759

773

 

aOR (95% CI)

1.00 (reference)

1.01 (0.89–1.14)

1.00 (0.88–1.14)

1.04 (0.90–1.21)

0.634

Lag3

Suicide events

739

759

774

779

 

aOR (95% CI)

1.00 (reference)

1.03 (0.91–1.17)

1.06 (0.93–1.21)

1.08 (0.93–1.25)

0.303

Lag0–3

Suicide events

744

780

748

779

 

aOR (95% CI)

1.00 (reference)

1.08 (0.95–1.23)

1.03 (0.89–1.20)

1.11 (0.93–1.31)

0.365

  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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