SF-8	Not at all	Very Little	Somewhat	Quite a lot	Could not do physical activities
During the past 4 weeks, how much did physical health problems limit your usual physical activities (such as walking or climbing stairs)?	0	1	2	3	4
During the past 4 weeks, how much difficulty did you have doing your daily work, both at home and away from home, because of your physical health?	0	1	2	3	4
During the past 4 weeks, how much did your physical health or emotional problems limit usual social activities with family or friends?	0	1	2	3	4
During the past 4 weeks, how much did personal or emotional problems keep you from doing your usual work, school or other daily activities?	0	1	2	3	4