Table 1 Background of matching subjects(n=243)

From: Levels of omega-3 fatty acid in serum phospholipids and depression in patients with lung cancer

 

Nondepression

Minor depression

Major depression

χ 2 or F

P -value

HADS-D (score)

0–4

5–10

11–21

  

Number

81

81

81

  

Gender (male)

57 (70%)

57 (70%)

57 (70%)

0.00

1.00

Age (years old)

65.0±8.3

65.4±8.4

65.1±8.3

0.05*

0.96

Performance status (0/1)a

23/58

23/58

23/58

0.00

1.00

Clinical stage (IIIb–IV)b

47 (58%)

47 (58%)

47 (58%)

0.00

1.00

Educational level (>9 years)

56 (69%)

50 (62%)

52 (64%)

1.24

0.54

Alcohol (>45 g day−1)

12 (15%)

12 (15%)

14 (17%)

0.51

0.77

Smoking

 Current smoker

30 (37%)

27 (33%)

33 (41%)

1.32

0.86

 Ex-smoker

31 (38%)

34 (42%)

32 (40%)

  

 Nonsmoker

20 (25%)

20 (25%)

16 (20%)

  

Body mass index (kg m−2)

22.1±3.2

22.1±2.9

22.0±3.5

0.04*

0.96

  1. Age and body mass index: mean±s.d. PS: number. Others: number and percentage. *F-value.
  2. aDefined by Eastern Cooperative Oncology Groups.
  3. bDefined by TNM Classification, International Union Against Cancer.