Table 2 Adjustments in studies included in the meta-analysis

From: Tooth loss is associated with increased risk of esophageal cancer: evidence from a meta-analysis with dose-response analysis

References

Adjustment

Abnet 2001

age, gender, smoking and alcohol

Abnet 2005

age and education

Dye 2007

age, gender, village, education, smoking

Guha 2007

age, gender, country/center, education, smoking, alcohol and all other oral health variables

Abnet 2008

age, gender, place of residence, ethnicity, alcohol, smoking, opium, or both, education, number of appliances and fruit and vegetable intake

Hiraki 2008

age, gender, tobacco, alcohol, vegetable and fruit intake, body mass index and regular exercise

Michaud 2008

age, race, physical activity, history of diabetes, alcohol, body-mass index, geographical location, height, calcium intake, total calorific intake, red-meat intake, fruit and vegetable intake, vitamin D score and smoking

Dar 2013

age, ethnicity, residence, education, wealth score, fruit and vegetable intake, bidi smoking, gutka chewing, alcohol consumption and cumulative use of hookah, cigarette and nass