Table 2 Sample characteristics (n=368)

From: Increased serum levels of sortilin are associated with depression and correlated with BDNF and VEGF

Sociodemographics

Details

Statistics

 

Case

Control

Total

P-value

Male (%)

25 (16)

46 (21)

  

Female (%)

127 (84)

170 (79)

  

Mean age in years (s.d.)

47.1 (9.4)

46.3 (10.2)

46.7 (9.8)

0.55a

Lifestyle indicators

 Physical activity (70)

   

0.022b

 >4 h per week (%)

52 (41.3)

94 (54.6)

146 (49.0)

 

4 h per week (%)

74 (58.7)

78 (45.4)

152 (51.0)

 

 Smoking (1)

   

0.011b

 Smoking (%)

41 (27)

32 (14.9)

73 (19.9)

 

 Previous smoker (%)

53 (34.9)

77 (35.8)

130 (35.4)

 

 Never smoker (%)

58 (38.1)

106 (49.3)

164 (44.7)

 

 BMI (2) kg/m2 (s.d.)

26.0 (5.4)

25.3 (4.3)

25.6 (4.8)

0.40a

 Alcohol (3)

   

0.131b

20/30 g per day (%)

138 (90.8)

202 (94.8)

340 (93.2)

 

 >20/30 g per day (%)

14 (9.2)

11 (5.2)

25 (6.8)

 

Health indicators

Depression

Mild depression (%)

56 (36.8)

   

Moderate depression (%)

70 (46.1)

   

Severe depression (%)

26 (17.1)

   

Previous depressive episodes (11)

   

<0.001b

Previous depressive episodes (%)

79 (54.9)

26 (12.2)

105 (29.4)

 

No previous depressive episodes (%)

65 (45.1)

187 (87.8)

252 (70.6)

 

Previous diagnosis with other mental disorders (26)

   

<0.001b

Previous diagnosis with other mental disorders (%)

14 (10.7)

1 (0.5)

15 (4.4)

 

No previous diagnosis with other mental disorders (%)

117 (89.3)

210 (99.5)

327 (95.6)

 

Antidepressant treatment (66)

   

<0.001b

No antidepressant treatment (%)

102 (70.3)

152 (96.8)

254 (84.1)

 

Antidepressant treatment (%)

43 (29.7)

5 (3.2)

48 (15.9)

 

SLEs

   

<0.001b

No experienced SLEs

63 (41.5)

135 (62.5)

198 (53.8)

 

One experienced SLE

42 (27.6)

58 (26.9)

100 (27.2)

 

Two or more experienced SLEs

47 (30.9)

23 (10.6)

70 (19.0)

 
  1. Abbreviations: BMI, body mass index; SLE, stressful life event.
  2. aWilcoxon two-sample rank-sum test (Mann–Whitney test).
  3. bChi square test.
  4. Number of missing individuals are listed in bold parenthesis in the first column.