TABLE 2.

Item calibration statistics for Children’s Oral Health Status Index and referral outcomes for proxy PROs. (a) Item calibration statistics for Children’s Oral Health Status Index. (b) Calibration statistics for referral

					Threshold
Subcomponent	Itemsa	Outcome	DIF	Slope	1	2	3	4	5
(A)
PHY/Symptoms	It was hard for my child to eat because of pain in his or her mouth	Both		2.22	−6.80	−4.71	−2.98
PHY/Symptoms	My child’s gums hurt.	Both	Parent Gender	2.16	−4.60	−3.03
MEN/Cognition	It was hard for my child to pay attention because of pain this or her mouth	Both		2.15	−6.49	−5.39	−4.10
PHY/Symptoms	My child’s mouth hurts	Both		1.89	−6.54	−4.22	−2.17
PHY/Symptoms	In the last 4 wk, how much of the time did your child have pain or discomfort?	Both		1.78	−6.80	−5.67	−3.14	−1.64
PHY/Symptoms	My child had a tooth that hurts.	Both		1.78	−6.12	−3.38	−2.09
MEN/Affect	In the last 4 wk, how much of the time was your child worried or concerned about problems with his/her mouth, tongue, teeth, jaws, or gums?	Both		1.74	−6.62	−5.91	−5.32	−3.43	−1.76
MEN/Affect	In the last 4 wk, how much of the time were you pleased or happy with the look of your child’s mouth, teeth, jaws, or gums?	Both	Parent Age-groupb	1.57	−5.62	−4.42	−2.46	−1.49	0.71
MEN/Affect	When I look at my child’s teeth	Both		1.48	−2.80	−0.16
MEN/Behavior	During the past 12 mo, was there a time that your child needed dental care but did not get it?	Both		1.46	−3.63
PHY/Oral Health Status	In general, would you say your child’s oral health is:	Both		1.43	−6.18	−2.97	−0.29	2.38
MEN/Affect	How happy are you with the color of your child’s teeth?	Both		1.27	−3.29	−2.23	−0.69	1.40
MEN/Affect	Does your child worry about problems with his or her teeth?	Both	Parent Education, Parent Language	1.11	−1.58
SOC/Functions	In the last 4 wk, how much of the time did your child’s oral health interfere with his/her social activities?	Both	Parent Education, Parent Language	0.98	−5.15	−4.35	−3.95	−2.87	−1.71
MEN/Affect	Compared to other kids my child’s age:	Both		0.85	−3.21	0.10
PHY/Symptoms	My child’s teeth are straight	Both		0.84	−0.32
PHY/Symptoms	My child’s teeth has problems (ie, space, crooked, crowded.)	Both	Parent Education	0.74	0.20
MEN/Cognition	I am able to help my child maintain good oral health	Index		0.67	−4.28	−3.50	−1.48
MEN/Affect	How much is your child afraid to go to a dentist?	Both	Parent Age-groupb	0.62	−3.35	−1.69	−0.35
PHY/Functions	In the last 4 wk, how much of the time was your child able to swallow comfortably?	Index	Parent education, parent language	0.57	−2.77	−2.58	−2.42	−2.31	−1.76
MEN/Cognition	I can do many things to prevent oral health problems in my child	Index		0.55	−4.80	−4.09	−1.44
MEN/Behavior	How often do you remind your child to brush his/her teeth before he/she goes to sleep?	Index	Parent age-group	0.08	0.09	0.73	1.21	2.20	3.30
(B)
PHY/Symptoms	It was hard for my child to eat because of pain in his or her mouth	Both		3.09	−8.09	−5.79	−3.77
PHY/Symptoms	It hurts my child’s teeth to chew.	Referral	Parent gender	2.81	−7.85	−5.49	−3.33
MEN/Cognition	It was hard for my child to pay attention because of pain this or her mouth	Both		2.72	−7.27	−6.11	−4.74
PHY/Symptoms	My child’s gums hurt	Both		2.58	−5.11	−3.45
PHY/Symptoms	My child’s mouth hurts	Both		2.54	−7.48	−4.99	−2.65
PHY/Symptoms	My child had a tooth that hurts	Both	Parent language	2.36	−6.93	−3.98	−2.51
PHY/Symptoms	During the last school year, how many days of school did your child miss because of pain in his/her mouth, tongue, teeth, or gums?	Referral	Parent education	2.04	−5.67	−4.22
PHY/Symptoms	In the last 4 wk, how much of the time did your child have pain or discomfort	Both		1.99	−7.03	−5.88	−3.33	−1.78
MEN/Affect	In the last 4 wk, how much of the time was your child worried or concerned about problems with his/her mouth, tongue, teeth, jaws, or gums?	Both		1.86	−6.75	−6.03	−5.44	−3.55	−1.86
MEN/Behavior	During the past 12 mo, was there a time that your child needed dental care but did not get if?	Both		1.47	−3.64
MEN/Affect	In the last 4 wk, how much of the time were you pleased or happy with the look of your child’s mouth, teeth, jaws, or gums?	Both		1.38	−5.32	−4.17	−2.33	−1.42	0.65
PHY/Oral Health Status	In general, would you say your child’s oral health is:	Both		1.28	−5.94	−2.85	−0.29	2.28
MEN/Affect	When I look at my child’s teeth	Both		1.25	−2.62	−0.17
MEN/Affect	How happy are you with the color of your child’s teeth?	Both		1.10	−3.14	−2.12	−0.66	1.32
MEN/Affect	Does your child worry about problems with his or her teeth?	Both	Parent education, parent language	1.07	−1.57
SOC/Functions	In the last 4 wk, how much of the time did your child’s oral health interfere with his/her social activities?	Both	Parent education, parent language	0.98	−5.14	−4.34	−3.94	−2.S6	−1.71
PHY/Oral Health Status	During the last 12 mo, did your child have an oral health problem?	Referral		0.86	−1.16
PHY/Symptoms	My child’s teeth are straight	Both		0.72	−0.32
MEN/Affect	Compared to other kids my child’s age:	Both		0.72	−3.13	0.09
MEN/Behavior	I take my child to the dentist	Referral		0.70	−4.09	−2.53
PHY/Symptoms	How often does your child have bad breath?	Referral	Parent age-groupb	0.67	−4.06	−3.11	−2.38	0.22	2.07
PHY/Symptoms	My child’s teeth has some problems (ie, space, crooked, crowded.)	Both		0.63	0.19
MEN/Affect	How much is your child afraid to go to a dentist?	Both	Parent age-groupb	0.62	−3.35	−1.70	−0.35
MEN/Cognition	By reminding my child to floss his or her teeth, I believe	Referral		0.19	−5.19	−3.37

^aItems in bold indicate being selected in the static short form.

^bNo DIF with age if within age-group (<45 and ≥45).