Table 1.

Questions that compose the subdomains of HRQoL

	Subdomain questions
Subdomain
RF
Question stem	“During the past 4 weeks, how much of the time have you had any of the following problems with your work or other regular activities as a result of your physical health?”
Question 1 for stem	“Accomplished less than you would like”
Question 2 for stem	“Did work or other activities less carefully than usual”
PF
Question stem	“Does your health now limit you in these activities? If so, how much?”
Question 1 for stem	“Moderate activities, such as moving a table, pushing a vacuum cleaner, bowling, or playing golf
Question 2 for stem	“Climbing several flights of stairs”
BP
Question 1	“During the past 4 weeks, how much did pain interfere with your normal work (including both work outside the home and housework)? ”
General overall health perceptions (GH)
Question 1	“In general, would you say your health is:” with the answer options being “Excellent, Very Good, Good, Fair, and Poor. ”
RE
Question stem	“During the past 4 weeks, how much of the time have you had any of the following problems with your work or other regular daily activities as a result of any emotional problems (such as feeling depressed or anxious)?”
Question 1 for stem	“Accomplished less than you would like”
Question 2 for stem	“Did work or other activities less carefully than usual”
SF
Question 1	“During the past 4 weeks, how much of the time has your physical health or emotional problems interfered with your social activities (such as visiting friends, relatives, etc.)?”
VT
Question 1	“How much of the time during the past 4 weeks did you have a lot of energy?”
MH
Question stem	“How much of the time during the past 4 weeks...”
Question 1 for stem	“Have you felt calm and peaceful?”
Question 2 for stem	“Have you felt downhearted and depressed?”