Operational definitions
| Criteria | Operational definition |
| High BP/hypertension | BP of ≥140/90 mm Hg in 18 years and above, BP of ≥150/90 mm Hg in 60 years and above and/or those taking antihypertensive medications |
| High blood sugar/suspicious of DM | Random blood sugar of ≥140 mg/dL was taken as suspicious of DM. |
| Overweight or obesity | Body mass index of ≥25 kg/m2 |
| Oral cancer | Histopathological confirmed carcinoma of oral cavity |
| OPMD | Leukoplakia, erythroplakia, leukoerythroplakia, oral lichen planus, smoker’s palate, oral submucous fibrosis were classified under OPMDs |
| Cervical cancer | Histopathological confirmed invasive carcinoma |
| Cervical precancer | Histopathological report of CIN (CIN I, CIN II and CIN III) |
| Breast cancer | Histopathological confirmed breast cancer |
| Socioeconomic classification (BG Prasad) | |
| Lower class | Per capita income less than 985 INR/month |
| Lower middle class | Per capita income between 986 and 1971 INR/month |
| Middle class | Per capita income between 1972 and 3286 INR/month |
| Upper middle class | Per capita income between 3287 and 6573 INR/month |
| Upper class | Per capita income 6574 INR and above/month |
BP, blood pressure; CIN, cervical intraepithelial neoplasia; DM, diabetes mellitus; INR, Indian national rupee; OPMD, oral potentially malignant disease.