Table 2 Item parameters, item fit index, differential item function and effect size for the Swedish translated item banks: PROMIS Pediatric Pain Interference v.2.0., PROMIS Pediatric Fatigue v.2.0., and PROMIS Pediatric Physical Activity v.1.0
Swedish translated Items | Item parameters | SS X2 itemfit index | Differential item functioning | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Gender SS X2 fit index | Age SS X2 fit index | Language SS X2 fit index | McFadden R2 uniform1 effect size | |||||||||||||||
Pain interference | a | b1 | b2 | b3 | b4 | p-value | Chisq | df | p-value | Chisq | df | p-value | Chisq | df | p-value | Age | Gender | Language |
It was hard to do things with my family because I had pain | 3.38 | 1.32 | 1.93 | 2.58 | 3.03 | 1.000 | 7.87 | 5 | .163 | 1.30 | 5 | .934 | 17.36 | 5 | .004 | .00 | .00 | .00 |
It was hard for me to be away from home because I had pain | 3.30 | 1.12 | 1.76 | 2.61 | 3.28 | 1.000 | 8.73 | 5 | .121 | 3.35 | 5 | .647 | 28.11 | 5 | .000 | .00 | .00 | .00 |
It was hard to have fun with friends because I was in pain | 3.09 | 1.00 | 1.67 | 2.44 | 3.09 | 1.000 | 2.97 | 5 | .704 | 2.89 | 5 | .716 | 8.27 | 5 | .142 | .00 | .00 | .00 |
It was hard to have fun when I had pain | 2.96 | 0.70 | 1.29 | 1.98 | 2.60 | 0.998 | 4.46 | 5 | .486 | 7.69 | 5 | .174 | 4.85 | 5 | .434 | .00 | .00 | .00 |
I had so much pain I had to stop what I was doing | 2.96 | 1.03 | 1.60 | 2.45 | 3.22 | 1.000 | 2.86 | 5 | .721 | 4.57 | 5 | .471 | 4.30 | 5 | .507 | .00 | .00 | .00 |
It was hard to stay standing when I had pain | 2.92 | 0.91 | 1.52 | 2.24 | 2.88 | 1.000 | 3.74 | 5 | .587 | 1.71 | 5 | .888 | 4.29 | 5 | .508 | .00 | .00 | .00 |
It was hard for me to pay attention when I had pain | 2.89 | 0.44 | 1.03 | 2.03 | 2.70 | 0.998 | 6.66 | 5 | .247 | 8.25 | 5 | .143 | 48.49 | 5 | .000* | .00 | .00 | .02 |
It was hard to get along with other people when I had pain | 2.88 | 1.11 | 1.84 | 2.71 | 3.53 | 1.000 | 7.62 | 5 | .178 | 8.64 | 5 | .124 | 23.11 | 5 | .000 | .00 | .00 | .00 |
It was hard for me to remember things when I had pain | 2.76 | 1.14 | 1.89 | 2.71 | 3.01 | 0.970 | 6.51 | 5 | .260 | 1.40 | 5 | .924 | 32.23 | 5 | .000 | .00 | .00 | .01 |
I had trouble doing schoolwork when I had pain | 2.72 | 0.48 | 1.09 | 1.93 | 2.48 | 0.904 | 1.21 | 5 | .944 | 4.47 | 5 | .484 | 64.97 | 5 | .000* | .00 | .00 | .02 |
It was hard for me to walk one block when I had pain | 2.72 | 0.98 | 1.63 | 2.49 | 2.99 | 0.987 | 4.99 | 5 | .416 | 4.84 | 5 | .436 | 18.73 | 5 | .002 | .00 | .00 | .00 |
I missed school when I had pain | 2.66 | 1.13 | 1.90 | 3.00 | 3.66 | 0.479 | 9.15 | 5 | .103 | 2.12 | 5 | .832 | 44.88 | 5 | .000* | .00 | .00 | .01 |
I hurt a lot | 2.50 | 0.59 | 1.33 | 2.23 | 2.82 | 0.823 | 5.84 | 5 | .322 | 2.25 | 5 | .813 | 31.81 | 5 | .000 | .00 | .00 | .01 |
I had trouble sleeping when I had pain | 2.48 | 0.56 | 1.26 | 2.10 | 2.71 | 0.824 | 3.65 | 5 | .601 | 5.19 | 5 | .392 | 15.52 | 5 | .008 | .00 | .00 | .00 |
I needed help walking when I was in pain | 2.46 | 1.55 | 2.18 | 3.01 | 3.72 | 1.000 | 4.68 | 5 | .456 | 14.82 | 5 | .011* | 12.45 | 5 | .029 | .00 | .00 | .01 |
It was hard for me to run when I had pain | 2.28 | 0.40 | 1.04 | 1.79 | 2.31 | 0.000 | 4.39 | 5 | .495 | 5.43 | 5 | .365 | 3.57 | 5 | .613 | .00 | .00 | .00 |
I walked carefully when I was in pain | 2.16 | 0.89 | 1.56 | 2.38 | 2.95 | 0.000 | 2.90 | 5 | .715 | 11.15 | 5 | .048 | 31.71 | 5 | .000 | .00 | .00 | .01 |
I felt angry when I had pain | 2.02 | 0.64 | 1.40 | 2.37 | 2.94 | 0.000 | 9.81 | 5 | .081 | 8.06 | 5 | .153 | 16.32 | 5 | .006 | .00 | .00 | .00 |
I hurt all over my body | 1.97 | 0.97 | 1.81 | 2.80 | 3.47 | 0.000 | 9.97 | 5 | .076 | 2.84 | 5 | .724 | 43.08 | 5 | .000* | .00 | .00 | .02 |
My pain was so bad that I needed to take medicine to treat it | 1.88 | 1.14 | 1.79 | 2.58 | 3.23 | 0.000 | 0.94 | 5 | .967 | 10.92 | 5 | .053 | 29.86 | 5 | .000 | .00 | .01 | .01 |
Fatigue | ||||||||||||||||||
Being tired kept me from having fun | 2.95 | 0.25 | 0.98 | 1.84 | 2.72 | 1.000 | 8.89 | 5 | .114 | 5.53 | 5 | .355 | 117.08 | 5 | .000* | .00 | .00 | .04 |
I was so tired it was hard for me to focus on my work | 2.83 | − 0.51 | 0.17 | 1.17 | 1.94 | 1.000 | 2.70 | 5 | .746 | 2.45 | 5 | .784 | 10.31 | 5 | .037 | .00 | .00 | .00 |
I was too tired to enjoy the things I like to do | 2.74 | 0.01 | 0.69 | 1.67 | 2.55 | 1.000 | 7.05 | 5 | .217 | 1.60 | 5 | .901 | 2.64 | 5 | .076 | .00 | .00 | .00 |
I was so tired it was hard for me to pay attention | 2.56 | − 0.56 | 0.16 | 1.16 | 2.16 | 1.000 | 5.79 | 5 | .328 | 18.58 | 5 | .002* | 9.88 | 5 | .0.79 | .01 | .00 | .00 |
I felt tired even when I had not done anything | 2.55 | − 0.39 | 0.23 | 1.06 | 1.94 | 1.000 | 6.42 | 5 | .267 | 5.13 | 5 | .401 | 19.45 | 5 | .002 | .00 | .00 | .00 |
Being tired made it hard for me to remember things | 2.52 | − 0.08 | 0.64 | 1.48 | 2.38 | 1.000 | 6.75 | 5 | .240 | 5.42 | 5 | .367 | 11.60 | 5 | .041 | .00 | .00 | .00 |
I felt too tired to spend time with my friends | 2.46 | − 0.02 | 0.84 | 1.82 | 2.68 | 1.000 | 9.41 | 5 | .094 | 5.06 | 5 | .408 | 3.61 | 5 | .607 | .00 | .00 | .00 |
I was too tired to do things outside | 2.46 | 0.07 | 0.84 | 1.64 | 2.89 | 1.000 | 6.52 | 5 | .259 | 7.93 | 5 | .160 | 63.27 | 5 | .000* | .00 | .00 | .02 |
I had trouble finishing things because I was too tired | 2.37 | − 0.66 | 0.11 | 1.06 | 1.95 | 1.000 | 7.54 | 5 | .183 | 9.03 | 5 | .108 | 47.25 | 5 | .000 | .00 | .00 | .02 |
I had trouble starting things because I was too tired | 2.30 | − 0.73 | − 0.03 | 0.88 | 1.83 | 0.997 | 7.16 | 5 | .209 | 18.32 | 5 | .003* | 119.71 | 5 | .000* | .01 | .00 | .04 |
I was too tired to go out with my family | 2.25 | 0.53 | 1.32 | 2.08 | 2.78 | 1.000 | 9.34 | 5 | .096 | 4.04 | 5 | .544 | 24.39 | 5 | .000 | .00 | .00 | .01 |
Being tired made it hard for me to play or go out with my friends as much as I'd like | 2.11 | 0.06 | 0.81 | 1.76 | 2.60 | 0.200 | 1.12 | 5 | .952 | 3.23 | 5 | .664 | 26.38 | 5 | .000 | .00 | .00 | .01 |
I was too tired to read | 2.09 | − 0.22 | 0.44 | 1.31 | 2.10 | 0.005 | 10.09 | 5 | .073 | 6.10 | 5 | .296 | 6.56 | 5 | .255 | .00 | .00 | .00 |
Being tired made it hard for me to keep up with my schoolwork | 2.07 | − 0.67 | 0.17 | 1.17 | 2.02 | 0.041 | 1.52 | 5 | .911 | 3.22 | 5 | .667 | 29.90 | 5 | .000 | .00 | .00 | .01 |
I was too tired to go up and down a lot of stairs | 2.06 | 0.62 | 1.33 | 1.99 | 2.59 | 0.996 | 2.65 | 5 | .753 | 12.64 | 5 | .027 | 108.23 | 5 | .000* | .01 | .00 | .05 |
I was too tired to eat | 2.00 | 0.76 | 1.37 | 2.44 | 3.26 | 0.882 | 2.29 | 5 | .808 | 4.99 | 5 | .418 | 14.17 | 5 | .013 | .00 | .00 | .00 |
I was too tired to take a bath or shower | 1.99 | 0.39 | 1.07 | 1.92 | 2.96 | 0.986 | 2.63 | 5 | .756 | 12.80 | 5 | .025* | 8.06 | 5 | .153 | .01 | .00 | .00 |
I got tired easily | 1.99 | − 1.12 | − 0.25 | 0.68 | 1.70 | 0.087 | 6.41 | 5 | .268 | 6.56 | 5 | .255 | 30.70 | 5 | .000 | .00 | .00 | .01 |
I felt weak | 1.97 | − 0.27 | 0.58 | 1.59 | 2.54 | 0.008 | 2.58 | 5 | .765 | 5.02 | 5 | .413 | 15.21 | 5 | .010 | .00 | .00 | .00 |
I felt more tired than usual when I woke up in the morning | 1.97 | − 0.51 | 0.25 | 1.25 | 1.97 | 0.402 | 6.54 | 5 | .257 | 7.42 | 5 | .191 | 3.94 | 5 | .558 | .00 | .00 | .00 |
I felt tired | 1.90 | − 1.32 | − 0.67 | 0.30 | 1.34 | 0.004 | 3.71 | 5 | .592 | 3.42 | 5 | .635 | 52.90 | 5 | .000 | .00 | .00 | .01 |
I was too tired to watch television | 1.88 | 0.45 | 1.21 | 2.33 | 3.25 | 0.935 | 3.20 | 5 | .669 | 3.62 | 5 | .605 | 8.47 | 5 | .132 | .00 | .00 | .00 |
I was too tired to do sports or exercise | 1.85 | − 0.28 | 0.58 | 1.47 | 2.06 | 0.000 | 4.72 | 5 | .451 | 3.95 | 5 | .557 | 10.15 | 5 | .071 | .00 | .00 | .00 |
It was hard for me to get out of bed in the morning because I was too tired | 1.65 | − 1.00 | − 0.23 | 0.59 | 1.45 | 0.000 | 4.64 | 5 | .461 | 3.89 | 5 | .565 | 14.57 | 5 | .012 | .00 | .00 | .00 |
I needed to sleep during the day | 1.49 | − 0.22 | 0.52 | 1.51 | 2.18 | 0.000 | 7.85 | 5 | .165 | 18.65 | 5 | .002* | 76.34 | 5 | .000* | .01 | .00 | .01 |
Physical Activity | ||||||||||||||||||
How many days were you so physically active that you sweated? | 3.88 | − 1.30 | − 0.64 | 0.47 | 1.58 | 1.000 | 1.15 | 5 | .949 | 1.28 | 5 | .940 | .00 | .00 | ||||
How many days did you exercise so much that you breathed hard? | 3.87 | − 1.08 | − 0.50 | 0.58 | 1.66 | 1.000 | 7.12 | 5 | .212 | 5.84 | 5 | .323 | .00 | .00 | ||||
How many days did you exercise or play so hard that your body got tired? | 3.67 | − 1.09 | − 0.47 | 0.72 | 1.82 | 1.000 | 2.00 | 5 | .849 | 11.41 | 5 | .044* | .00 | .00 | ||||
How many days did you exercise or play so hard that you felt tired? | 3.05 | − 1.01 | − 0.34 | 0.87 | 1.95 | 1.000 | 4.15 | 5 | .529 | 3.32 | 5 | .650 | .01 | .00 | ||||
How many days did you exercise really hard for 10 min or more? | 3.01 | − 0.92 | − 0.25 | 0.82 | 1.92 | 1.000 | 2.45 | 5 | .784 | 2.38 | 5 | .795 | .00 | .00 | ||||
How many days did you exercise or play so hard that your muscles burned? | 2.75 | − 0.85 | − 0.01 | 1.17 | 2.45 | 0.988 | 4.35 | 5 | .500 | 1.46 | 5 | .917 | .01 | .00 | ||||
How many days did you play sports for 10 min or more? | 2.67 | − 1.54 | − 0.88 | 0.23 | 1.19 | 1.000 | 2.88 | 5 | .219 | 3.04 | 5 | .690 | .00 | .00 | ||||
How many days did you run for 10 min or more? | 1.92 | − 0.78 | − 0.07 | 1.12 | 2.26 | 0.000 | 1.03 | 5 | .960 | 7.85 | 5 | .165 | .01 | .00 | ||||
On a usual day. how physically active were you? | 1.60 | − 2.62 | − 0.96 | 0.12 | 1.93 | 0.000 | 4.67 | 5 | .457 | 5.21 | 5 | .391 | .00 | .00 | ||||
How many days were you physically active for 10 min or more? | 1.11 | − 2.96 | − 1.84 | − 0.18 | 1.00 | 0.000 | 11.32 | 5 | .045 | 15.28 | 5 | .009* | .01 | .00 | ||||