Table 1.
Investigated potential indicators of PTB in Zhaotong
| Biological aspects | Behavioural aspects | Socio-economic aspects | Local environment aspects |
|---|---|---|---|
| Agea | Alcohol intakee | Annual family income (yuan)k | Residence locationp |
| Genderb | Chronic fatigue or overworkf | Below poverty levelc | Family sizeq |
| BCG vaccinationc1 | Frequent Internet café visitsc | CDC (km from residence)l | Number of persons per roomr |
| BMId | Marital statusg | CDC (minutes from residence)m | Living space per persons |
| Hormone therapyc | Migrant workc | Educational leveln | Windows per m2 of family spacet |
| Cancerc | Smoking (active)h | Health insurancec1 | Frequently keeping windows open c1 |
| Chronic bronchitisc | Smoking (passive)i | Occupationo | Coal used for cooking/heatingc |
| Diabetesc | Spitting habitc | Electricity used for cooking/heatingc | |
| HIV/AIDSc | Firewood used for cooking/heatingc | ||
| Kidney diseasec | Natural/biogas used for cooking/heatingc | ||
| Mental diseasec | Other energy source for cooking/heatingc | ||
| Parasitic diseasec | PTB patient(s) living nearbyc | ||
| Pneumoconiosisc | Contact with PTB patient(s)c | ||
| Otherc |
Abbreviations: AIDS Acquired immune deficiency syndrome, BMI Body mass index, CDC Zhaotong Center for Disease Control, HIV Human immunodeficiency virus
Definitions: a < 15 = 1/15–29 = 2/30–44 = 3/45–59 = 4/≥60 = 5; bmale = 1/female = 0; c1no = 1/yes = 0; cyes = 1/no = 0,d < 18.5 = 1/≥25 = 2/18.5–24.9 = 3; enever = 1/in the past = 2/currently = 3; fyes(light or heavy = 1/no = 0; gunmarried = 1/married or remarried = 2/divorced or widowed = 3; hnever = 1/past smoker = 2/current smoker = 3; ino exposure = 1/light exposure = 2/heavy exposure = 3; k < 2000 = 1/2000–5000 = 2/5001–10 000 = 3; l ≥ 10 001 = 4 < 15 = 1/15–30/31–60/≥61; m < 31 = 1/31–60 = 2/61–120 = 3/≥121; nprimary school or below = 1/middle or technical secondary school = 2/junior college and above = 3; ofarmer or migrant worker = 1/other = 2/unemployed = 3/student = 4; purban = 1/rural = 0; q < 3 = 1/3–4 = 2/5–6 = 3/> 7 = 4; r ≤ 1 = 1/1.6–2 = 2/> 2 = 3; s ≤ 10 m2 = 1/11–25 m2 = 2/26–50 m2 = 3/> 50 m2 = 4; tlow(< 0.05) = 1/medium(0.05–0.077) = 2/high(> 0.077) = 3