1: Wholly inactive; dependent on others and cannot leave residence
            2: Mostly inactive or restricted to minimum activities of daily living
            3: Sometimes participates in mild activities like walking, limited housework or shopping
            4: Regularly participates in mild activities
            5: Sometimes participates in moderate activities like swimming, unlimited housework or shopping
            6: Regularly participates in moderate activities
            7: Regularly participates in active events like bicycling
            8: Regularly participates in very active events like bowling or golf
            9: Sometimes participates in impact sports/activities like jogging, skiing, ballet, heavy labor or backpacking
            10: Regularly participates in impact sports or activities.