Table 1: Demographic data of patients.

MinimumMaximumMeanSDMedian

All subjects999
 Male612
 Female387
Age (years)999609473.58 5.86 73.00
Height (cm)996130180156.86 8.69 158.00
Weight (kg)9963010154.75 9.98 54.00
Smoking status999
 Current smokers130
 Exsmokers392
 Never-smokers477
Smoking behaviors522
 Smoking period (year)5201.00 68.00 40.50 14.40 44.00
 CPDa5201.00 100.00 21.44 13.42 20.00
 Brinkman (smoking) index5199.00 3480.00 853.32 588.64 700.00
Cancer status (present history)999
 Present89
 Absent874
 Unknown36
Cancer status (past history)999
 Present128
 Absent848
 Unknown23
Cancer sites (present/past history)105/136
 Oral mucosa/tongue2/2
 Upper digestive tract15/36
 Lower digestive tract8/23
 Liver6/4
 Biliary tract (gallbladder/bile duct)2/1
 Pancreas2/2
 Breast6/10
 Lung11/12
 Hematolymphoid system6/2
 Ovary1/1
 Uterus3/5
 Kidney1/8
 Bladder2/7
 Prostate35/20
 Thyroid1/1
 Skin1/1
 Bone1/0
 Others2/1

Cigarettes smoked per day.