Table 2.

Values of the criteria of the remaining 28 items after examination of the thresholds and the DIF

MFM Domains	Item		Location	Fit Residuals	Probability Score	Ceiling Effect*	Deviation†	Removal Agreement‡ (%)	Item Difficulty§
D1 domain	25	Maintain standing position	−1.686	3.243||	<0.001¶	0.49	Yes	50	3.1 (1–5)
	12	Sit down from standing	−1.219	−0.438	0.00	0.41	No	0	3.0 (3–5)
	26	Raise the foot	−0.741	−0.88	0.07	0.41	No	0	4.0 (2–5)
	29	Takes 10 steps on a line	−0.629	−0.35	0.09	0.48	No	33.3	3.8 (2–5)
	8	From supine, sit up	−0.6	5.462||	<0.001¶	0.15	Yes	0	4.0 (4–5)
	24	Stand up from the mat	−0.25	0.662	0.00	0.25	No	0	4.0 (3–5)
	27	Touch the floor	−0.186	−0.83	0.05	0.36	No	0	4.6 (3–5)
	11	Stand up from the chair	0.617	0.579	0.68	0.13	No	0	5.0 (4–5)
	28	10 steps on both heels	0.948	−1.017	0.02	0.19	Yes	50	5.0 (4–5)
	30	Run 10 meters	0.975	−3.376||	0.03	0.1	No	0	4.8 (4–5)
	32	Squat from standing	1.353	−1.678	0.04	0.16	No	0	4.8 (4–5)
	31	Hop 10 times in place	1.417	−1.641	0.11	0.11	No	0	5.0 (5)
	23	Place the forearms on the table	−1.125	−2.125	0.13	0.83	No	0	2.0 (0–3)
D2 domain	16	Extend the elbow	−0.888	−0.342	0.37	0.64	No	50	2.0 (2)
	1	Hold the head for 5 seconds	−0.282	−1.788	0.07	0.71	No	83.3	0.5 (0–1)
	15	Place hands on the head	−0.239	−1.762	0.00	0.54	No	33.3	3.0 (2–4)
	5	Move hand to opposite shoulder	−0.111	−2.289	0.01	0.7	No	0	1.2 (0–3)
	3	Flex hip and knee >90°	0.166	1.628	0.45	0.59	Yes	50	2.6 (1–3)
	13	Maintain the seated position	0.251	0.749	0.72	0.58	No	0	2.1 (1–3)
	14	Head in flexion, raise the head	0.32	−0.188	0.10	0.62	Yes	66.6	2.0 (1–3)
	2	From supine, raise the head	1.907	1.217	0.06	0.25	No	33.3	4.0 (3–5)
	22	Place the finger on 8 drawings	−1.319	−1.957	0.07	0.82	No	83.3	0 (0–2)
D3 domain	17	Pick up and hold 10 coins	−0.675	−2.435	0.03	0.61	No	33.3	0 (0–2)
	18	Go round the edge of the digital video disc	−0.609	−2.486	0.02	0.74	No	33.3	2 (1–4)
	4	Dorsiflex the foot	0.285	3.489||	<0.001*	0.54	Yes	50	1 (0–2)
	21	Pick the ball and turn the hand	0.356	−0.91	0.19	0.68	No	33.3	2 (0–3)
	19	Draw a series of loops	0.438	1.263	0.09	0.41	No	33.3	2 (1–2)
	20	Tear the sheet of paper folded	1.524	−1.641	0.07	0.35	No	33.3	2 (2–3)

^*Percentage of patients with 0 score.

^†Graphical examination of item characteristic curves for significant deviations from the expected model.

^‡Percentage of agreement between 6 physiotherapists to change or remove the item.

^§Median (range) of item difficulty from 0 (very easy) to 5 (very difficult) as assessed by physiotherapists.

^||Fit residuals >2.5 or < −2.5.

^¶Probability below the Bonferroni adjustment for D1 (.00077 for 13 items), D2 (.00083 for 12 items), and D3 (.00143 for 7 items).