Factor Analysis with the 55-item Version of the Survey, n=501

Domaina	Subscale	Question #	Survey Question	Factor Loading	Retained for 34 item version
FACTOR 1
QOL	Self-efficacy	42	How confident are you that today you could talk with your medical decision maker about the care you would want if you were very sick or near the end of life?	0.7505	X
FLEX	Self-efficacy	62	How confident are you that today you could talk with your doctor about how much flexibility you want to give your medical decision maker?	0.72995	X
QOL	Self-efficacy	43	How confident are you that today you could talk with your doctor about the care you would want if you were very sick or near the end of life?	0.72002	X
FLEX	Self-efficacy	61	How confident are you that today you could talk with your decision maker about how much flexibility you want to give them?	0.70473	X
QOL	Self-efficacy	26	How confident are you that today you could talk with your doctor about whether or not certain health situations would make your life not worth living?	0.66252	X
QOL	Self-efficacy	25	How confident are you that today you could talk with your medical decision maker about whether or not certain health situations would make your life not worth living?	0.64755	X
DM	Self-efficacy	8	How confident are you that today you could ask someone to be your medical decision maker?	0.63294	X
DM	Self-efficacy	9	How confident are you that today you could talk with your doctor about who you want your medical decision maker to be?	0.63277	X
DM	Self-efficacy	10	How confident are you that today you could talk with your other family and friends about who you want your medical decision maker to be?	0.53885	X
FACTOR 2
QOL	Contemplation	38	How much have you thought about the care you would want if you were very sick or near the end of life?	0.73172
QOL	Contemplation	21	How much have you thought about whether or not certain health situations would make your life not worth living?	0.71662
QOL	Contemplation	39	How much have you thought about talking with your medical decision maker about the care you would want if you were very sick or near the end of life?	0.71441
QOL	Contemplation	22	How much have you thought about talking with your medical decision maker about whether or not certain health situations would make your life not worth living?	0.69707
QOL	Contemplation	24	How much have you thought about talking with your other family and friends about whether or not certain health situations would make your life not worth living?	0.57988
QOL	Readiness	29	How ready are you to decide whether or not certain health situations would make your life not worth living?	0.57048	X
QOL	Readiness	46	How ready are you to decide on the medical care you would want if you were very sick or near the end of life?	0.48871	X
FACTOR 3
QOL	Readiness	52	How ready are you to talk to your other family and friends about the kind of medical care you would want if you were very sick or near the end of life?	0.69998	X
QOL	Readiness	35	How ready are you to talk to your other family and friends about whether or not certain health situations would make your life not worth living?	0.6605	X
QOL	Self-efficacy	44	How confident are you that today you could talk with your other family and friends about the care you would want if you were very sick or near the end of life?	0.65418	X
FLEX	Self-efficacy	63	How confident are you that today you could talk with your other family and friends about how much flexibility you want to give your medical decision maker?	0.62537	X
FLEX	Readiness	71	How ready are you to talk to your other family and friends about how much flexibility you want to give your medical decision maker?	0.5855
QOL	Self-efficacy	27	How confident are you that today you could talk with your other family and friends about whether or not certain health situations would make your life not worth living?	0.58294	X
QOL	Contemplation	41	How much have you thought about talking with your other family and friends about the care you would want if you were very sick or near the end of life?	0.57117
DM	Readiness	18	How ready are you to talk to your other family and friends about who you want your medical decision maker to be?	0.55163	X
FACTOR 4
FLEX	Contemplation	58	How much have you thought about talking with your medical decision maker about how much flexibility you want to give them?	0.77612
FLEX	Contemplation	57	How much have you thought about the amount of flexibility you would want to give your medical decision maker?	0.73945
FLEX	Contemplation	59	How much have you thought about talking with your doctor about how much flexibility you want to give your decision maker?	0.69154
FLEX	Contemplation	60	How much have you thought about talking with other friends and family about how much flexibility you want to give your decision maker?	0.67834
FACTOR 5
QOL	Readiness	33	How ready are you to talk to your doctor about whether or not certain health situations would make your life not worth living?	0.78326	X
QOL	Readiness	50	How ready are you to talk to your doctor about the kind of medical care you would want if you were very sick or near the end of life?	0.76664	X
DM	Readiness	16	How ready are you to talk with your doctor about who you want your medical decision maker to be?	0.65307	X
FLEX	Readiness	69	How ready are you to talk to your doctor about how much flexibility you want to give your decision maker?	0.65113	X
QOL	Contemplation	23	How much have you thought about talking with your doctor about whether or not certain health situations would make your life not worth living?	0.56606
QOL	Contemplation	40	How much have you thought about talking with your doctors about the care you would want if you were very sick or near the end of life?	0.56388
FACTOR 6
DM	Knowledge	2	How well informed are you about what makes someone a good medical decision maker?	0.85653	X
DM	Knowledge	3	How well informed are you about the types of decisions that a medical decision maker may have to make for you in the future?	0.78301	X
DM	Knowledge	1	How well informed are you about who can be a medical decision maker?	0.7825
FLEX	Knowledge	55	How well informed are you about what it means to give a medical decision maker flexibility to make future decisions?	0.60476
FLEX	Knowledge	56	How well informed are you about the different amounts of flexibility a person can give their medical decision maker?	0.55696
FACTOR 7
DM	Contemplation	5	How much have you thought about asking someone to be your medical decision maker?	0.74107
DM	Contemplation	4	How much have you thought about who your medical decision maker should be?	0.69099	X
DM	Contemplation	7	How much have you thought about talking with your other family and friends about who you want your medical decision maker to be?	0.67899
DM	Contemplation	6	How much have you thought about talking with your doctors about who you want your medical decision maker to be?	0.59162
FACTOR 8
QOL	Readiness	54	How ready are you to sign official papers putting your wishes in writing about the kind of medical care you would want if you were very sick or near the end of life?	0.78719	X
QOL	Readiness	37	How ready are you to sign official papers putting your wishes in writing about whether or not certain health situations would make your life not worth living?	0.7453
FLEX	Readiness	73	How ready are you to sign official papers putting your wishes in writing about how much flexibility to give your decision maker?	0.70768	X
DM	Readiness	20	How ready are you to sign official papers naming a person or group of people to make medical decisions for you?	0.45441	X
FACTOR 9
QOL	Readiness	48	How ready are you to talk to your decision maker about the kind of medical care you would want if you were very sick or near the end of life?	0.60591	X
QOL	Readiness	31	How ready are you to talk to your decision maker about whether or not certain health situations would make your life not worth living?	0.59538	X
DM	Readiness	14	How ready are you to formally ask someone to be your medical decision maker?	0.54097	X
FLEX	Readiness	67	How ready are you to talk to your decision maker about how much flexibility you want to give them?	0.47456	X
FACTOR 10
QUEST	Contemplation	75	How much have you thought about questions you will ask your doctor to help make good medical decisions?	0.70726
QUEST	Knowledge	74	How well informed are you about the types of questions you can ask your doctor that will help you make a good medical decision?	0.67435
QUEST	Self-efficacy	76	How confident are you that today you could ask the right questions of your doctor to help make good medical decisions?	0.65978	X
QUEST	Readiness	82	How ready are you to ask your doctor questions to help you make a good medical decision?	0.64189	X

^aDomains: DM =Medical Decision Maker, QOL = Quality of Life, FLEX = Flexibility for the Surrogate Decision Maker, QUEST = Asking Questions of Medical Providers