Table 3 Exploratory factor analysis

Physical Function

Chores such as vacuuming or yard work?

Go up and down stairs at a normal pace?

Go for a walk of at least 15 min?

Are you able to run errands and shop?

Anxiety

In the past 7 days, I felt fearful

In the past 7 days, I found it hard to focus on anything other than my anxiety

In the past 7 days, my worries overwhelmed me

In the past 7 days, I felt uneasy

Depression

In the past 7 days, I felt worthless

In the past 7 days, I felt helpless

In the past 7 days, I felt depressed

In the past 7 days, I felt hopeless

Fatigue

During the past 7 days, I feel fatigued

During the past 7 days, I have trouble starting things because I am tired

In the past 7 days, how run-down did you feel on average?

In the past 7 days, how fatigued were you on average?

Sleep disturbance

In the past 7 days, my sleep quality was

In the past 7 days, my sleep was refreshing

In the past 7 days, I had a problem with my sleep

In the past 7 days, I had difficulty falling asleep

Ability to participate in social roles and activities

I have trouble doing all of my regular leisure activities with others

I have trouble doing all of the family activities that I want to do

I have trouble doing all of my usual work (include work at home)

I have trouble doing all of the activities with friends that I want to do

Pain interference

In the past 7 days, how much did pain interfere with your day to day activities?

In the past 7 days, how much did pain interfere with work around the home?

In the past 7 days, how much did pain interfere with your ability to participate in social activities?

In the past 7 days, how much did pain interfere with your household chores?

Pain intensity