Table 2 Suicides among men with a first cancer, excluding nonmelanoma skin cancer, in the Danish Cancer Register 1971–1999

From: Suicides among Danish cancer patients 1971–1999

    

Models of SMR

Model of rates

 

Number observed ( N =740)

Number expected ( N =439.7)

Person-years (%) ( N =861713)

Univariate RR (95% CI)

Multivariate RR (95% CI)

Multivariate RR (95% CI)

Intercept

    

1.2 (1.0–1.5)

(7.4 (5.9–9.2))*10−4

Time since diagnosis

      

Intercept/P-value

   

1.2 (1.0–1.4)/P<0.00001

P<0.00001

P<0.00001

<0.25 year

117

30.2

6.7

3.3 (2.6–4.1)

2.4 (1.9–3.1)

2.4 (1.9–3.1)

0.25–<1 year

140

63.1

14.1

1.9 (1.5–2.3)

1.5 (1.2–1.9)

1.5 (1.2–1.9)

1–<3 year

185

106.2

24.0

1.5 (1.2–1.8)

1.3 (1.1–1.6)

1.3 (1.1–1.6)

3–<5 year

95

69.0

15.6

1.2 (0.9–1.5)

1.1 (0.8–1.4)

1.1 (0.8–1.4)

5+ year

203

171.2

39.6

1

1

1

Stage of cancer

      

Intercept/P-value

   

1.4 (1.3–1.5)/P<0.00001

P=0.002

P=0.005

Localised

408

294.5

66.3

1

1

1

Regional

102

51.8

12.0

1.4 (1.1–1.8)

1.1 (0.9–1.3)

1.1 (0.8–1.3)

Metastasised

78

27.6

6.2

2.0 (1.6–2.6)

1.4 (1.1–1.8)

1.4 (1.1–1.8)

Unknown

152

65.9

15.5

1.7 (1.4–2.0)

1.4 (1.2–1.7)

1.4 (1.1–1.7)

Period of diagnosis

      

Intercept/P-value

   

1.7 (1.4–1.9)/P<0.00001

P=0.004

P=0.09

1971–1975

93

82.6

17.5

0.7 (0.5–0.9)

0.7 (0.5–0.9)

0.7 (0.5–0.9)

1976–1980

162

97.9

20.7

1

1

1

1981–1985

158

96.6

20.6

1.0 (0.8–1.2)

0.9 (0.8–1.2)

0.9 (0.8–1.2)

1986–1990

150

85.3

19.9

1.1 (0.9–1.3)

1.0 (0.8–1.2)

0.9 (0.7–1.1)

1991–1995

121

58.5

15.6

1.3 (1.0–1.6)

1.1 (0.9–1.4)

0.8 (0.7–1.1)

1996–1999

56

18.8

5.7

1.8 (1.3–2.4)

1.3 (0.9–1.8)

0.8 (0.6–1.1)

Age at diagnosis (years)

      

Intercept/P-value

   

1.7 (1.5–1.9)/P=0.17

P=0.07

P=0.005

0–49

115

81.2

25.9

0.8 (0.7–1.0)

1.2 (0.9–1.5)

0.7 (0.6–0.9)

50–64

237

130.3

30.9

1.1 (0.9–1.3)

1.2 (1.0–1.4)

1.0 (0.8–1.2)

65–79

314

184.1

37.0

1

1

1

80+

74

44.2

6.3

1.0 (0.8–1.3)

0.8 (0.7–1.1)

1.3 (1.0–1.6)

Prognosis of cancer site

      

Intercept/P-value

   

1.6 (1.5–1.7)/P<0.00001

P<0.00001

P<0 .00001

Good (+66%)

70

73.7

19.7

0.6 (0.5–0.8)

0.6 (0.5–0.8)

0.6 (0.5–0.8)

Medium (33–66%)

183

60.4

66.9

1

1

1

Poor (0–33%)

487

305.7

13.4

1.9 (1.6–2.3)

1.6 (1.3–1.9)

1.6 (1.3–1.9)

  1. Multivariate models included the factors time since diagnosis, stage of cancer, period of diagnosis, age at diagnosis, and prognosis of cancer site measured by 5-year relative survival.
  2. Models of standardised mortality ratio (SMR) and rates showing relative risk (RR) in both univariate and multivariate models.
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