Item flagged due to | Selected item | ||||||
Floor/ceiling effect | Not fitting unidimensionality | Redundancy | Not proper order | Differential Item Functioning | Less important according to patients/experts | ||
Factor 1 “Amount of physical activity” | |||||||
Walking outside | x | ||||||
Chores inside | x | x | x | ||||
Chores outside | x | ||||||
Physical leisure | x | x | |||||
Intensity# | x | ||||||
Time in locomotion# | x | ||||||
Standing time# | x | x | x | ||||
VMU·min−1# | x | ||||||
Steps# | x | ||||||
MVPA¶ | x | x | |||||
VMU·min−1¶ | x | ||||||
Steps¶ | x | ||||||
Factor 2 “Difficulty with physical activity” | |||||||
Difficulty getting dressed | x | ||||||
Difficulty carrying things | x | x | x | ||||
Difficulty climbing stairs | x | x | x | x | |||
Difficulty showering | x | x | x | ||||
Difficulty taking a bath | x | x | x | ||||
Difficulty bending over | x | x | x | ||||
Difficulty washing yourself | x | x | x | ||||
Difficulty walking up a small slope | x | x | x | ||||
Difficulty when hurrying | x | x | |||||
Avoid activities | x | ||||||
Breathless in general | x | ||||||
Lack physical strength | x | x | |||||
Lack of strength in legs | x | x | |||||
Tired in general | x | ||||||
Take breaks | x | ||||||
Pace yourself | x | x | |||||
Prevented from doing activities | x | x | |||||
Breathless walking on level ground | x | x | |||||
Slow down while walking | x | x | |||||
Breathless climbing stairs | x | x | |||||
Time to recover | x | x | |||||
Spread activities | x | x | |||||
Stop doing activities | x | x | x | ||||
Puffs in addition | x | x | x | ||||
Consider lung problems when planning | x | x | |||||
Help from others | x | x | x | x | x |
VMU: vector magnitude unit; MVPA: moderate-to-vigorous physical activity. #: data from Dynaport; ¶: data from Actigraph.