Table 1.

12 Measures of successful aging.

Category	Abbreviation	Question	Definition of healthy
Not hospitalized	HOSP	“Did you stay overnight in the hospital in the last 6 months?”	No report of being hospitalized
No bed days	BED	“During the past two weeks, how many days have you stayed in bed all or most of the day because of illness or injury?”	No days in bed reported
Life satisfaction	SPL	“How satisfied are you with the meaning and purpose of your life? on a scale of 1–10, with 1 being extremely and 10 being not at all”	Score of 1 to 4
Life as a whole	FLW	“How do you feel about life as a whole?” (1: delighted; 3: mostly satisfied; 6: terrible)	Score of 1–3
Not depressed	DEP	10 questions of the center for epidemiologic studies short depression scale [25], each ranked 0–3	Score < 10, out of a possible 30 points
No limitations in activities of daily living	ADL	“Do you have any difficulty performing this activity?” from a list of walking, transferring, eating, dressing, bathing, or toileting	No difficulties reported
No limitations in independent activities of daily living	IADL	“Do you have any difficulty performing this activity?” from a list of heavy or light housework, shopping, meal preparation, money management, or telephoning	No difficulties reported
Intact extremity strength	EXSTR	“Do you have any difficulty with this activity” from a list of lifting, reaching, or gripping	No difficulty reported
Self-rated health	SRH	“How would you rate your health in general: excellent, very good, good, fair, or poor?”	Excellent, very good, or good self-reported health
Intact cognition	COG	Modified minimental state examination [26], scored from 0 to 100	Score above 89
Ability to ambulate	TWLK	Timed 15 foot walk	Less than 10 seconds
Frequent ambulation	BLK	“During the last week, how many city blocks did you walk?”	>4 blocks per day, on average