1 = ≤24
2 = 25-34
3 = 35-44
4 = 45-59
5 = ≥60

1 = Single
2 = Married
3 = Other

1 = Doctor
2 = Master
3 = Undergraduate
4 = Specialist
5 = Secondary

1 = Very poor
2 = Poor
3 = Average
4 = Better
5 = Very good

1 = Senior
2 = Intermediate
3 = Primary
4 = Other

1 = Secondary
2 = Tertiary

1 = Traditional Chinese Medicine
2 = Western Medicine

1 = No
2 = Yes

1 = Internal medicine
2 = Surgery

1 = ＜0.40
2 = 0.40-0.60
3 = ≥0.60

1 = Very small
2 = Smaller
3 = Average
4 = Larger
5 = Very large

1 = 0
2 = 1
3 = 2
4 = 3
5 = ≥4

1 = Very low
2 = Lower
3 = Average
4 = Higher
5 = Very high

1 = Rarely
2 = Less
3 = Average
4 = More
5 = A lot

1 = Very low
2 = Lower
3 = Average
4 = Higher
5 = Very High