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Table 1 Definition of variables used

From: The relationship between socio-demographic factors, health status, treatment type, and employment outcome in patients with inflammatory bowel disease in Japan

Type of variable

Type of response

Outcome variable

Employment status

Unemployed

Employed

Socio-demographic variables

Gender

Male

Female

Age

Years old

Final education level

Compulsory education or senior high school

Vocational college or junior college

4-year or 6-year university

Master’s degree

IBD variables

Type of IBD

Crohn’s Disease

Ulcerative Colitis

Time after the diagnosis of IBD

0–2 years

3–8 years

9–15 years

Longer than 15 years

Comorbidity variables

Hyperlipidemia/dyslipidemia

No

Yes

Hypertension

No

Yes

Depression

No

Yes

Treatment variables

Prescription of biologics

No

Yes

Experience of surgical treatment

No

Yes

Interaction variables

Interaction between biologic and surgical treatment

Surgical treatment with biologics

Surgical treatment without biologics