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Table 1 Characteristics of the study population based on suicidal ideation

From: Association of omega-3, omega-6 fatty acids intakes and omega-6: omega-3 ratio with the prevalence of suicidal ideation: mediating role of C-reactive protein

Characteristic

Total (n = 27944)

Non-suicidal ideation (n = 26907)

Suicidal ideation (n = 1037)

P value

Age

47.8 ± 18.6

47.8 ± 18.7

47.8 ± 18.0

0.981

Gender, %

   

< 0.001

 Male

14,092 (50.4)

13,630 (50.7)

462 (44.6)

 

 Female

13,852 (49.6)

13,277 (49.3)

575 (55.4)

 

Race, %

   

< 0.001

 Mexican American

4651 (16.6)

4446 (16.5)

205 (19.8)

 

 Other Hispanic

2681 (9.6)

2513 (9.3)

168 (16.2)

 

 Non-Hispanic White

12,343 (44.2)

11,943 (44.4)

400 (38.6)

 

 Non-Hispanic Black

5805 (20.8)

5611 (20.9)

194 (18.7)

 

 Other Race

2464 (8.8)

2394 (8.9)

70 (6.8)

 

Education level, %

   

< 0.001

 Less than high school

6488 (24.7)

6106 (24.1)

382 (39.3)

 

 High school or above

19,812 (75.3)

19,221 (75.9)

591 (60.7)

 

Marital, %

   

< 0.001

 Married/living with partner

16,716 (62.5)

16,213 (62.9)

503 (50.8)

 

 Separated/divorced/widowed

4943 (18.5)

4689 (18.2)

254 (25.6)

 

 Never married

5094 (19.0)

4860 (18.9)

234 (23.6)

 

MVPA, %

   

0.142

 Low (< 150 min per week)

23,165 (82.9)

22,306 (82.9)

859 (84.3)

 

 High (≥ 150 min per week)

4779 (17.1)

4601 (17.1)

178 (15.7)

 

Alcohol status, n%

   

0.267

 Current or ever, %

19,952 (71.4)

19,238 (71.5)

714 (69.9)

 

 Never

7992 (28.6)

7669 (28.5)

323 (30.1)

 

Smoking status, n%

   

< 0.001

 Current or ever, %

12,630 (45.2)

12,054 (44.8)

576 (55.3)

 

 Never

15,314 (54.8)

14,853 (55.2)

461 (44.7)

 

Hypertension, %

   

< 0.001

 Yes

9561 (34.2)

9123 (33.9)

438 (42.2)

 

 No

18,383 (65.8)

17,784 (66.1)

599 (57.8)

 

Diabetes, %

   

< 0.001

 Yes

3880 (13.9)

3669 (13.6)

211 (20.3)

 

 No

24,064 (86.1)

23,238 (86.4)

826 (79.7)

 

Hyperlipidemia, %

   

0.002

 Yes

19,576 (70.1)

18,805 (69.9)

771 (74.3)

 

 No

8368 (29.9)

8102 (30.1)

266 (25.7)

 

CHD, %

   

< 0.001

 Yes

1064 (4.1)

993 (3.9)

71 (7.3)

 

 No

25,158 (95.9)

24,260 (96.1)

898 (92.7)

 

Stroke

   

< 0.001

 Yes

929 (3.5)

853 (3.4)

76 (7.8)

 

 No

25,356 (96.5)

24,460 (96.6)

896 (92.2)

 

Cancer, %

   

0.057

 Yes

2490 (9.5)

2381 (9.4)

109 (11.2)

 

 No

23,802 (90.5)

22,940 (90.6)

862 (88.8)

 

Body mass index, kg/m2

29.0 ± 6.9

29.0 ± 6.9

29.8 ± 7.8

< 0.001

Albumin, g/dl

42.7 ± 3.3

42.7 ± 3.3

42.2 ± 3.7

< 0.001

Creatinine, umol/L

80.3 ± 38.7

80.3 ± 38.9

79.2 ± 34.5

0.354

PIR

2.51 ± 1.63

2.54 ± 1.63

1.71 ± 1.38

< 0.001

CRP

0.19 (0.07, 0.44)

0.19 (0.07, 0.44)

0.21 (0.08, 0.60)

0.008

Total energy intake, kcal/d

2124.7 ± 1004.0

2127.0 ± 1001.5

2065.3 ± 1066.9

0.053

Omega-3 fatty acids intake, g/d

1.45 (0.90, 2.27)

1.46 (0.90, 2.28)

1.23 (0.74, 2.03)

< 0.001

Omega-6 fatty acids intake, g/d

13.79 (8.61, 20.95)

13.83 (8.66, 21.01)

12.30 (7.11, 19.70)

< 0.001

Omega-6/3 fatty acids intake ratio

9.10 (7.53, 11.41)

9.10 (7.53, 11.40)

9.28 (7.58, 12.00)

0.020

  1. Values are mean±SD or number (%). P < 0.05 was deemed significant. CHD, coronary heart disease; PIR, family income-to-poverty ratio; CRP, c-reactive protein; MVPA, moderate to vigorous aerobic physical activity