Table 1. The family affluence scale (FAS) questions and responses. Total FAS score is calculated as the sum of all responses and ranges from 0 to 13.

Question	Score
1. Does your family have a car or a van?	(0=no; 1=yes one; 2=yes two or more)
2. Do you have your own bedroom for yourself?	(0=no; 1=yes)
3. How many times did you travel out of state for holiday/vacation last year?	(0=not at all, 1=once, 2=twice, 3=more than twice)
4. How many computers does your family own?	(0=none, 1=one, 2=two, 3=more than two)
5. At home, do you have a dishwasher?	(0=no, 1=yes)
6. How many bathrooms (room with a bath) are in your home?	(0=none, 1=one, 2=two, 3=more than two)