Table 3 Suicides among women 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 =501)

Number expected ( N =361.4)

Person-years (%) ( N =1370828)

Univariate RR (95% CI)

Multivariate RR (95% CI)

Multivariate RR (95% CI)

Intercept

    

1.0 (0.7–1.3)

(2.8 (2.1–3.8)) *10−4

Time since diagnosis

      

Intercept/P-value

   

1.1 (1.0–1.3)/P=0.00003

P=0.02

P<0.00001

<0.25 year

32

17.6

4.6

1.6 (1.1–2.4)

1.3 (0.9–1.9)

1.7 (1.1–2.5)

0.25–<1 year

86

41.2

10.9

1.9 (1.5–2.4)

1.6 (1.2–2.1)

2.0 (1.6–2.7)

1–<3 year

127

79.3

21.2

1.4 (1.2–1.8)

1.3 (1.0–1.6)

1.6 (1.3–2.0)

3–<5 year

71

57.2

15.5

1.1 (0.9–1.5)

1.0 (0.8–1.4)

1.2 (0.9–1.6)

5+ year

185

166.1

47.8

1

1

1

Stage of cancer

      

Intercept/P-value

   

1.3 (1.1–1.4)/P<0.00001

P=0.26

P=0.30

Localised

318

253.9

69.6

1

1

1

Regional

97

63.1

17.6

1.2 (1.0–1.5)

1.0 (0.8–1.3)

1.0 (0.8–1.3)

Metastasised

29

12.0

3.2

1.9 (1.3–2.8)

1.4 (0.9–2.1)

1.4 (0.9–2.1)

Unknown

57

32.4

9.6

1.4 (1.1–1.9)

1.3 (0.9–1.7)

1.2 (0.9–1.6)

Period of diagnosis

      

Intercept/P-value

   

1.3 (1.0–1.5)/P=0.0009

P=0.10

P=0.08

1971–1975

94

83.7

19.8

0.9 (0.7–1.2)

0.9 (0.7–1.2)

1.0 (0.7–1.3)

1976–1980

112

89.3

21.7

1

1

1

1981–1985

118

80.7

21.0

1.2 (0.9–1.5)

1.1 (0.9–1.5)

1.1 (0.8–1.4)

1986–1990

82

62.0

18.9

1.1 (0.8–1.4)

1.0 (0.7–1.3)

0.8 (0.6–1.0)

1991–1995

73

36.7

14.1

1.6 (1.2–2.1)

1.4 (1.0–1.9)

0.8 (0.6–1.1)

1996–1999

22

9.0

4.6

2.0 (1.2–3.1)

1.5 (0.9–2.4)

0.6 (0.4–1.0)

Age at diagnosis

      

Intercept/P-value

   

1.5 (1.3–1.7)/P=0.70

P=0.80

P=0.04

0–49

120

92.0

30.2

0.9 (0.7–1.1)

1.0 (0.8–1.3)

0.8 (0.6–1.0)

50–64

193

142.4

35.4

0.9 (0.7–1.1)

1.0 (0.8–1.2)

1.0 (0.8–1.2)

65–79

164

109.8

28.8

1

1

1

80+

24

17.2

5.6

1.0 (0.6–1.4)

0.8 (0.5–1.3)

0.7 (0.4–1.1)

Prognosis of cancer site

      

Intercept/P-value

   

1.5 (1.3–1.7)/P=0.0001

P=0.002

P=0 .0005

Good (+ 66%)

104

97.7

27.3

0.8 (0.6–1.1)

0.9 (0.7–1.2)

0.9 (0.7–1.2)

Medium (33–66%)

120

94.7

27.0

1

1

1

Poor (0–33%)

78

34.7

9.4

1.8 (1.3–2.4)

1.6 (1.2–2.1)

1.7 (1.2–2.2)

Breast cancer

199

134.2

36.4

1.2 (0.9–1.5)

1.2 (1.0–1.5)

1.3 (1.0–1.6)

  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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