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Table 4 Result with respect to the monotonicity assumption and GRM-model fit at the item level, GRM-model item parameters, and measurement invariance of the DF-PROMIS-UE v2.0 bank

From: Graded response model fit, measurement invariance and (comparative) precision of the Dutch-Flemish PROMIS® Upper Extremity V2.0 item bank in patients with upper extremity disorders

Item Monotonicity GRM-model fit GRM-model Item parameters Measurement invariance
ID Item stem Scalability coefficient Hi S-X2
p-value
a b1 b2 b3 b4 Gender Center Duration of complaints Location of complaints Language
UF R2 UF R2 UF R2 UF R2 UF R2
PFA14r1ab Are you able to carry a heavy object (over 10 pounds/5 kg)? 0.591 0.181 1.862 −0.613 −0.227 0.415 1.054           
PFA16r1 Are you able to dress yourself, including tying shoelaces and buttoning your clothes? 0.639 0.021 2.780 −1.757 −1.097 − 0.397 0.444           
PFA17 Are you able to reach into a high cupboard? 0.550 0.677 1.670 − 1.156 −0.587 −0.046 0.657        UD 0.118   
PFA18 Are you able to use a hammer to pound a nail? 0.656 0.451 3.027 −0.768 −0.421 − 0.059 0.361           
PFA20 Are you able to cut your food using eating utensils? 0.642 0.003 3.028 −1.553 −0.985 −0.376 0.172    UD 0.032       
PFA28 Are you able to open a can with a hand can opener? 0.679 0.063 3.404 −0.738 −0.431 − 0.111 0.463    UD 0.027       
PFA29r1 Are you able to pull heavy objects (10 pounds/5 kg) towards yourself? 0.629 0.363 2.266 −1.068 −0.534 −0.066 0.771           
PFA34ab Are you able to wash your back? 0.604 0.353 1.989 −0.906 − 0.343 0.249 1.077        UD 0.028   
PFA35 Are you able to open and close a zipper? 0.606 0.247 2.572 −2.203 −1.347 −0.704 0.099           
PFA36ab Are you able to put on and take off a coat or jacket? 0.579 0.408 1.968 −2.736 −1.438 −0.495 0.604        UD 0.043   
PFA38 Are you able to dry your back with a towel? 0.622 0.596 2.378 −1.488 −0.923 −0.181 0.682        UD 0.028   
PFA40 Are you able to turn a key in a lock? 0.611 0.729 2.545 −1.992 −1.446 −0.922 −0.342           
PFA43r1 Are you able to write with a pen or pencil? 0.592 0.242 2.345 −1.857 −1.371 −0.843 −0.401           
PFA44 Are you able to put on a shirt or blouse? 0.606 0.4822 2.222 −2.361 −1.439 −0.624 0.473           
PFA48 Are you able to peel fruit? 0.634 0.149 2.983 −1.187 −0.877 − 0.491 0.058    UD 0.050    UD 0.027   
PFA50 Are you able to brush your teeth? 0.612 0.211 2.310 −2.416 −2.001 −1.292 −0.614           
PFA54 Are you able to button your shirt? 0.630 0.140 2.783 −1.871 −1.330 −0.730 0.084    UD 0.023 UD 0.020 UD 0.023   
PFB11 Are you able to wash dishes, pots, and utensils by hand while standing at a sink? 0.638 0.251 2.928 −1.421 −0.825 −0.375 0.303           
PFB13ab Are you able to carry a shopping bag or briefcase? 0.593 0.010 1.926 −1.262 −0.808 −0.126 0.580        UD 0.027   
PFB15r1 Are you able to change the bulb in a table lamp? 0.641 0.768 3.067 −1.280 −1.012 −0.571 −0.001           
PFB16r1 Are you able to press with your index finger (for example ringing a doorbell)? 0.596 0.071 2.165 −2.651 −2.110 −1.510 −0.950          UD 0.025
PFB18 Are you able to shave your face or apply makeup? 0.645 0.377 3.073 −1.810 − 1.411 − 0.841 − 0.101           
PFB19r1 Are you able to squeeze a new tube of toothpaste? 0.663 0.518 3.177 −2.142 −1.667 −1.055 −0.410           
PFB20r1 Are you able to cut a piece of paper with scissors? 0.651 0.071 3.313 −1.624 −1.229 −0.844 − 0.310        UD 0.021   
PFB21r1 Are you able to pick up coins from a table top? 0.603 0.013 2.164 −2.350 −1.916 −1.389 −0.677          UD 0.043
PFB22 Are you able to hold a plate full of food? 0.662 0.489 2.965 −1.488 − 1.153 −0.639 0.103           
PFB23r1b Are you able to poor liquid from a bottle into a glass? 0.661 0.002 3.046 −1.692 −1.373 −0.798 −0.151           
PFB25 Are you able to push open a door after turning the knob? 0.593 0.257 2.157 −2.353 −1.524 −0.966 − 0.182           
PFB26 Are you able to shampoo your hair? 0.644 0.331 2.907 −1.470 −1.009 − 0.496 0.287           
PFB27 Are you able to tie a knot or a bow? 0.640 0.015 3.027 −1.429 −0.959 −0.570 0.042    UD 0.056 UD 0.031     
PFB28r1a Are you able to lift 10 pounds (5 kg) above your shoulder? 0.639 0.081 2.040 −0.198 0.224 0.670 1.350        UD 0.062   
PFB30 Are you able to open a new milk carton? 0.675 0.035 3.590 −1.449 −0.990 −0.520 0.100           
PFB31r1 Are you able to open car doors? 0.654 0.181 2.906 −1.773 −1.330 −0.798 −0.181           
PFB33 Are you able to remove something from your back pocket? 0.577 0.478 2.045 −1.626 −1.104 −0.576 0.209           
PFB34ab Are you able to change a light bulb overhead? 0.638 0.311 2.357 −0.717 −0.357 0.079 0.824        UD 0.052   
PFB36 Are you able to put on a pullover sweater? 0.595 0.475 2.061 −2.009 −1.148 −0.265 0.618        UD 0.058   
PFB37r1 Are you able to reach and get down a 5 pound (2 kg) object from above your head? 0.660 0.724 3.125 −1.980 − 1.547 −0.978 0.348           
PFB39r1 Are you able to reach and get down a 5 pound (2 kg) object from above your head? 0.626 0.605 2.218 −0.886 −0.533 − 0.055 0.705      UD 0.022 UD 0.030   
PFB41 Are you able to trim your fingernails? 0.586 0.595 2.352 −1.487 −1.091 −0.547 0.001    UD 0.038       
PFB56r1 Are you able to lift one pound (0.5 kg) to shoulder level without bending your elbow? 0.563 0.250 1.816 −1.004 −0.604 −0.191 0.508        UD 0.041   
PFC43 Are you able to use your hands, suchs as for turning faucets, using kitchen gadgets, or sewing? 0.619 0.045 2.853 −1.755 −1.243 −0.713 −0.069    UD 0.232    UD 0.024   
PFC49 Are you able to water a house plant? 0.662 0.016 3.091 −1.807 −1.431 −1.056 −0.463 UD 0.028        UD 0.022
PFM2b Are you able to lift a heavy painting or picture to hang on your wall above eye-level? 0.684 0.720 2.786 −0.431 −0.083 0.377 1.208          NUD 0.021
PFM16ab Are you able to pass a 20-pound (10 kg) turkey or ham to other people at the table? 0.697 0.275 2.698 −0.212 0.176 0.677 1.469           
PFM18b Are you able to continuously swing a baseball bat or tennis racket back and forth for 5 min? 0.624 0.131 1.941 −0.339 0.091 0.553 1.239        UD 0.028   
PFC8 Does your health now limit you in opening a previously opened jar? 0.617 0.203 2.460 −1.903 0.999 −0.365 0.391           
  1. Abbreviations in alphabetical order: ID Identification, GRM Graded Response Model, NUD Non-Uniform DIF, ID, UD Uniform DIF, UF Uniformity
  2. a items included in the 7a short form
  3. b items selected as one of the first three items in the CAT