Author

Year

Location

Study type

Population

Number of IBD

Psoriasis patients

Newcastle- Ottawa score

Hammer et al. [18]

1968

England

Case-control

NA

243

5

5

Yates et al. [19]

1982

England

Case-control

Mixed

204

18

5

Lakatos et al. [20]

2003

Hungary

Cohort

Mixed

873

4

7

Bernstein et al. [21]

2005

Canada

Cohort

Mixed

8060

749

6

Weng et al. [22]

2007

USA

Cross-sectional

Mixed

12,601

242

5

Bardella et al. [23]

2008

Italy

Cross-sectional

Mixed

180

3

6

Yüksel et al. [24]

2009

Turkey

Cohort

Mixed

352

11

5

Ciccacci et al. [25]

2013

Italy

Cohort

NA

467

21

7

Vavricka et al. [26]

2015

Switzerland

Cohort

Mixed

1249

10

8

Singh et al. [27]

2015

India

Cohort

Mixed

1652

7

6

Lolli et al. [28]

2015

Italy

Case-control

Mixed

251

62

8

Card et al. [29]

2016

England

Cohort

Mixed

56,097

2856

7

Kim et al. [30]

2016

Korea

Cross-sectional

Mixed

40,843

636

6

Karmiris et al. [31]

2016

Greece

Cohort

Adult

1860

51

7

Halling et al. [32]

2017

Denmark

Cross-sectional

Mixed

47,325

378

5

Vide et al. [33]

2018

Portugal

Cohort

Mixed

342

24

7

Napolitano et al. [34]

2019

Italy

Cohort

NA

200

32

5

Yehuda et al. [35]

2019

Israel

Cohort

Mixed

12,625

614

7

Ghersin et al. [36]

2020

Israel

Cohort

Adolescents

2372

36

5

Edigin et al. [37]

2021

USA

Cross-sectional

Mixed

184,120

2255

7

Koumaki et al. [38]

2021

Greece

Cohort

Mixed

806

30

7

JO et al. [39]

2021

Korea

Cross-sectional

Mixed

64,837

929

6

Tillack et al. [40]

2014

Germany

Cohort

Adult

434

21

6

George et al. [41]

2015

USA

Cohort

Mixed

521

18

6

Fréling et al. [42]

2015

France

Cohort

Adult

583

59

6

Pugliese et al. [43]

2015

England

Cohort

NA

1384

33

7

Guerra et al. [44]

2016

Spain

Case-control

Mixed

7415

125

7

Protic et al. [45]

2016

Switzerland

Cohort

NA

752

34

7

Peer et al. [46]

2017

Australia

Cohort

Adult

270

10

6

Sridhar et al. [47]

2018

USA

Cohort

Children

409

33

7

Weizman et al. [48]

2018

Canada

Cohort

NA

676

72

7

Andrad et al. [49]

2018

Portugal

Cohort

Mixed

732

39

6

Courbette et al. [50]

2019

France

Cohort

Children

147

20

5

Buckley et al. [51]

2021

USA

Cohort

Children

3035

50

6