Table 1 Characteristics of participants diagnosed with colorectal cancer according to 5-HTTLPR biallelic and triallelic genotype

From: 5-HTTLPR and use of antidepressants after colorectal cancer including a meta-analysis of 5-HTTLPR and depression after cancer

 

Biallelic genotype

Triallelic genotype

 

LL (n=266)

SL (n=412)

SS (n=128)

P-value

LALA (n=206)

L A L G , SLA

(n=399)

LGLG, SLG, SS (n=188)

P-value

Age at diagnosis (years)

 Mean (5%, 95%)

66.4 (57,76)

66.3 (57, 76)

66.4 (57, 75)

0.95

66.2 (58, 76)

66.5 (57,76)

66.2 (57,75)

0.77

Sex, number of females (%)

114 (43)

171 (42)

58 (45)

0.74

86 (42)

167 (42)

83 (44)

0.85

Educational level, n (%)

 Basic

49 (18)

72 (17)

29 (23)

 

35 (17)

71 (18)

41 (22)

 

 Vocational

152 (57)

219 (53)

67 (52)

0.51

116 (56)

217 (54)

98 (52)

0.79

 High

61 (23)

118 (29)

31 (24)

 

52 (25)

108 (27)

48 (26)

 

 Unknown

4 (2)

3 (1)

1 (1)

 

3 (1)

3 (1)

1 (1)

 

Cohabitation status at diagnosis, n (%)

 Living alone

84 (32)

116 (28)

37 (29)

0.63

65 (32)

119 (30)

49 (26)

0.47

 Living with a partner

182 (68)

296 (72)

91 (71)

 

141 (68)

280 (70)

139 (74)

 

Charlson comorbidity index score, n (%)

 0

177 (67)

268 (65)

89 (70)

0.67

135 (66)

266 (66)

126 (67)

0.80

 1

51 (19)

71 (17)

21 (16)

 

42 (20)

67 (17)

32 (17)

 

2

38 (14)

73 (18)

18 (14)

 

29 (14)

66 (16)

30 (16)

 

Year of diagnosis (calendar year)

 Mean (5%, 95%)

2003.9 (1998, 2009)

2004.1 (1998, 2009)

2003.5 (1998, 2009)

0.25

2003.9 (1999, 2009)

2004.1 (1998, 2009)

2003.5 (1998, 2009)

0.08

Follow-up time (years)

 Mean (5%, 95%)

4.1 (0.1, 10.8)

4.0 (0.1, 11.2)

4.2 (0.1, 12.0)

0.85

4.2 (0.1, 10.8)

4.0 (0.1, 10.9)

4.1 (0.1, 12.0)

0.89

  1. Abbreviations: ANOVA, analysis of variance; 5-HTTLPR, serotonin-transporter-linked polymorphic region.
  2. Tests for differences between allele groups were done with ANOVA for continuous variables and X2-tests for categorical variables.