Table 1 Patient characteristics

Age in years

  1. 18–29

  2. 30–39

  3. 40–49

  4. 50–59

  5. >59

Gender

  1. Male

  2. Female

Marital status

  1. Never married

  2. Married/Cohabiting

  3. Divorced

  4. Widowed

Occupation

  1. Unemployed

  2. Student

  3. Employed

  4. Retired

  5. Peasant

Education

  1. Never attended

  2. Primary

  3. Secondary

  4. Post secondary

Use of herbs

  1. Yes

  2. No

Exposure to radio contrast

  1. Yes

  2. No

Chronic Diseases

  1. None

  2. Cardiovascular

  3. Gastrointestinal

  4. Neurological

  5. Respiratory

  6. Hypertension

  7. Diabetes mellitus

  8. Malignancy

  9. Hypertension and diabetes

AKIN classification

  1. Stage I

  2. Stage II

  3. Stage III