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Table 2 T-score and internal consistency reliability of PROMIS-29 Profile V2.1 domain

From: Psychometric validation of the Korean version of PROMIS 29 Profile V2.1 among patients with lower extremity problems

 

T-score Mean (SD)

Cronbach's α

Item-rest correlation

Physical function

45.9 (9.0)

0.91

 

Are you able to do chores such as vacuuming or yard work?

  

0.71

Are you able to go up and down stairs at a normal pace?

  

0.78

Are you able to go for a walk of at least 15 min?

  

0.83

Are you able to run errands and shop?

  

0.88

Anxiety

50.5 (9.1)

0.87

 

In the past 7 days, I felt fearful

  

0.73

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

  

0.70

In the past 7 days, my worries overwhelmed me

  

0.74

In the past 7 days, I felt uneasy

  

0.74

Depression

49.5 (7.7)

0.85

 

In the past 7 days, I felt worthless

  

0.67

In the past 7 days, I felt helpless

  

0.73

In the past 7 days, I felt depressed

  

0.69

In the past 7 days, I felt hopeless

  

0.67

Fatigue

47.0 (8.8)

0.88

 

During the past 7 days, I feel fatigued

  

0.71

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

  

0.67

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

  

0.77

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

  

0.81

Sleep Disturbance

50.8 (8.5)

0.80

 

In the past 7 days, my sleep quality was…

  

0.62

In the past 7 days, my sleep was refreshing

  

0.50

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

  

0.69

In the past 7 days, I had difficulty falling asleep

  

0.64

Ability to participate in social roles and activities

51.2 (10.7)

0.94

 

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

  

0.82

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

  

0.84

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

  

0.84

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

  

0.89

Pain Interference

58.0 (8.5)

0.95

 

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

  

0.84

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

  

0.91

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

  

0.89

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

  

0.88

Pain intensity

  Â