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Table 1 Selected baseline characteristics by categories of psychotic-like symptoms, of 33 623 participants with questionnaire data in the women's lifestyle and health study

From: Dietary intake of fish, omega-3, omega-6 polyunsaturated fatty acids and vitamin D and the prevalence of psychotic-like symptoms in a cohort of 33 000 women from the general population

 

Positive psychotic-like symptomsa

 

Low level group

Middle level group

High level group

 

N = 18 411

N = 14 395

N = 817

Characteristics

(55%)

(43%)

(2.4%)

Age b, years, mean (SD)

52 (6)

51 (6)

50 (6)

BMI, kg/m2, mean (SD)

23 (3.4)

23 (3.8)

24 (4.0)

BMI, kg/m 2 , No. (%)

< 25 normal weight

13 381 (73)

10 030 (70)

506 (62)

25-29.9 overweight

3 697 (20)

3005 (21)

198 (24)

≥ 30 obese

770 (4)

857 (6)

71 (9)

missing

563 (3)

503 (3)

42 (5)

Education, No. (%)

0-10 years

4 853 (26)

3 829 (27)

235 (29)

11-13 years

6 899 (37)

5 845 (41)

336 (41)

over 13 years

6 342 (34)

4 463 (31)

227 (28)

missing

317 (2)

258 (2)

19 (2)

Country of birth, No. (%)

northern countries

18 060 (98)

13 942 (97)

744 (91)

other countries

318 (2)

427 (3)

68 (8)

missing

33 (0.2)

26 (0.2)

5 (0.6)

Smokers, No. (%)

never

8 111 (44)

5 702 (40)

281 (35)

ever

10 250 (56)

8 656 (60)

534 (65)

missing

50 (0.3)

37 (0.3)

2 (0.2)

Alcohol intake, No. (%)

ever

16 258 (88)

12 614 (88)

668 (82)

never

2 153 (12)

1 781 (12)

149 (18)

Dietary intake, g/day, median (5-95%) of:

fatty fish

7 (0-21)

7 (0-21)

7 (0-28)

meat

76 (26-144)

78 (22-149)

77 (3-167)

dairy products

330 (20-831)

331 (14-850)

320 (4-857)

vegetables

79 (22-177)

79 (21-186)

80 (19-214)

fruit

107 (15-315)

106 (11-311)

102 (7-337)

cereals

125 (47-280)

129 (47-288)

129 (41-299)

saccharides (sugar)

20 (7-44)

20 (7-45)

21 (6-51)

alcohol

2.5 (0-11)

2.4 (0-11)

1.8 (0-12)

marine fatty acidsc

0.27 (0.07-0.6)

0.27 (0.06-0.6)

0.26 (0.05-0.7)

omega-3 fatty acidsd

1.3 (0.6-2)

1.3 (0.6-2)

1.2 (0.6-2)

omega-6 fatty acidse

4.8 (2-8)

4.8 (2-8)

4.7 (2-8)

vitamin D (μg/day)

4.0 (1.8-7.1)

3.9 (1.7-7.2)

3.8 (1.4-7.1)

Total energy intake, kJ/day, mean (SD)

6 509 (1 801)

6 626 (1 886)

6 637 (1 986)

Proportion of total energy intake, % from:

   • fat

31

31

31

   • protein

16

16

16

   • carbohydrate

51

51

51

   • alcohol

1

1

1

  1. a Participants categorized into levels of psychotic-like symptoms; low, middle, high (see methods section)
  2. b Age at the completeness of the follow-up questionnaire
  3. c Sum of eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA) and docosapentaenoic acid
  4. d Sum of eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), docosapentaenoic acid and α-linolenic acid
  5. e Sum of arachidonic and linoleic acids