Table 4 Poisson regression models of suicide mortality among Norwegian males

Year (1990-2006)

0.98*

0.973-0.982

1.07

0.988-1.159

1.02

0.996-1.045

Health region

   East region

1

1

1

   South region

1.09*

1.025-1.163

0.40*

0.200-0.799

0.46*

0.299-0.717

   West region

0.79*

0.741-0.851

0.32*

0.176-0.580

0.38*

0.260-0.553

   Mid region

1.25*

1.168-1.335

0.44*

0.212-0.907

0.51*

0.321-0.802

   North region

1.00

0.922-1.083

0.28*

0.114-0.690

0.33*

0.184-0.581

Outpatient consultations

1.00*

0.998-1.000

1.01

0.998-1.003

Man-labour years

0.76*

0.709-0.818

0.89

0.750-1.048

Discharges

0.96*

0.946-0.967

1.00

0.950-1.056

Beds

1.30*

1.215-1.399

1.15

0.785-1.700

Bed-days

1.00*

1.000-1.001

1.00

0.999-1.003

Antidepressants

0.99*

0.991-0.994

1.00

0.985-1.012

Alcohol

0.85*

0.818-0.884

0.91

0.738-1.131

Education

0.98*

0.968-0.982

0.83*

0.722-0.942

0.86*

0.785-0.940

Unemployment

1.11*

1.075-1.147

0.92*

0.859-0.985

0.91*

0.849-0.966

^$IRR = Incidence Rate Ratio

¹Goodness-of-fit χ² = 73.2

²Goodness-of-fit χ² = 79.5

*p < 0.05

Prob > χ²(70) = 0.37

Prob > χ²(77) = 0.40