Table 2 Prevalence of self-reported acne (quite a lot and very much) across mental distress, diet, lifestyle and socio-demographic factors among 1672 boys and 2103 girls in a cross-sectional study in Oslo, Norway (n = 3775).

Males

Females

N

N

Whole sample

1612

14.4% (12.7-16.1)

2043

12.8% (11.4-14.3)

Mental distress

No

1371

13.4% (11.6-15.2)

1327

9,6% (8.0-11.2)

Yes

229

20.5% (15.3-25.7)

701

18.8% (15.9-21.1)

Diet

   Soft drinks with sugar

Often

405

13.8% (10.4-17.2)

177

11.9% (7.1-16.7)

Seldom

1196

14.7% (12.7-16.7)

1836

13.0% (11.5-14.5)

   Raw vegetables

Often

597

12.7% (10.0-15.4)

999

10.8% (8.9-12.7)

Seldom

1011

15.2% (13.0-17.4)

1043

14.7% (12.5-16.9)

   Fat fish

Seldom

1482

14.1% (12.3-15.9)

1918

12.4% (10.9-13.9)

Often

123

16.3% (9.8-22.8)

115

17.4% (10.5-24.3)

   Chocolate/sweets

Seldom

1124

13.0 (11.0-15.0)

1379

11.7 (10.0-13.4)

Often

484

17.3 (13.9-20.7)

659

15.2 (12.5-17.9)

   Potato chips

Seldom

1361

13.6 (11.8-15.4)

1804

12.5 (11.0-14.0)

Often

246

18.3 (13.5-23.1)

234

14.5% (10.0-19.0)

Lifestyle

   Cigarette smoking

Yes, daily

281

13.2% (9.2-17.2)

418

10.5% (7.5-13.5)

Yes, but has quit or sometimes

450

14.4% (11.2-17.6)

577

13.0% (10.3-15.7)

No, never

878

14.8% (12.4-17.2)

1042

13.5% (11.4-15.6)

   Alcohol intake

Often

715

12.7% (10.3-15.1)

710

10.8% (8.5-13.1)

Seldom

882

15.6% (13.2-18.0)

1294

13.7% (11.8-15.6)

Socio-demographic factors

   Ethnicity

Western

1143

14.5% (12.5-16.5)

1441

10.8% (9.2-12.4)

Non-Western

322

14.0% (10.2-17.8)

454

18.5% (14.9-22.1)

   Income

>1.0 million NOK

335

13.1% (9.5-16.7)

388

8.2% (5.5-10.9)

0.5-1.0 million NOK

729

14.5% (11.9-17.1)

905

12.2% (10.1-14.3)

< 0.5 million NOK

282

14.9% (10.7-19.1)

428

17.1% (13.5-20.7)