Table 2.

Psychometric properties of Health Care Insecurity measure items

Health Care Insecurity measure items¶	Item order†	Theta measure‡	Infit MNSQ§	Outfit MNSQ‖	Item-total correlation
I am in control of making my health better	15	1.16	1.56	1.58	0.54
I would be able to receive emergency medical care if I needed it	10	0.89	1.37	1.23	0.65
I have the things I need to maintain my health	13	0.43	0.79	0.76	0.77
I have the things I need to improve my health	14	0.32	0.88	0.86	0.75
I feel secure about receiving in-hospital care if I need it	6	0.28	1.01	1.39	0.71
I am able to get medical care whenever I need it	1	0.18	1.06	1.62	0.66
I would be able to receive non-emergency medical care if I needed it	11	0.00	0.86	1.00	0.74
I have a way to get medical testing if I need it	4	−0.03	0.88	0.87	0.74
I don’t have a way to get the medication that I need when I need it*	7	−0.19	1.64	1.73	0.60
I have a way to get screening tests	5	−0.35	0.78	0.70	0.78
I feel secure about how my health care needs are met	8	−0.42	0.46	0.41	0.84
I feel like nobody is looking out for my health care needs*	9	−0.46	1.26	1.13	0.66
I can easily see a primary care doctor to discuss a problem or concern	3	−0.47	0.71	0.70	0.76
I don’t have a way to see a specialist doctor if I need one*	12	−0.48	1.20	1.17	0.69
I am worried that if I get sick, I won’t get the care I need*	2	−0.87	1.05	0.88	0.72

Note: n = 52

^*Items are reverse coded.

^†Order of items as given to patients.

^‡Items ordered by Theta, which indicates the mean item difficulty level.

^§Infit MNSQ is an index used to identify redundant items; evaluation criteria of good fit: values between 0.6 and 1.4.⁴³

^‖Outfit MNSQ is an index used to identify outlier items; evaluation criteria of good fit: values between 0.6 and 1.4.⁴³

^¶Complete item stems shown; copy of full instrument available in Appendix A.