Measuring patient activation in Italy: Translation, adaptation and validation of the Italian version of the patient activation measure 13 (PAM13-I)

Table 3 PAM13-I item fit statistics

PAM13_I Item no.	Location	Threshold 1	Threshold 2	Threshold 3	SE	Infit Value MSQ^a	Outfit Value MSQ^b
PAM13-I 2	0.05	−1.10	−0.24	1.49	0.4	1.14	1.19
PAM13-I 1	0.25	−0.50	−0.12	1.37	0.3	1.22	1.32
PAM13-I 6	0.31	−0.52	−0.36	1.81	0.3	0.86	0.78
PAM13-I 3	0.31	−0.87	−0.36	2.16	0.3	1.00	1.15
PAM13-I 7	0.35	−0.24	−0.36	1.66	0.3	0.88	0.88
PAM13-I 4	0.36	−0.44	−0.34	1.86	0.3	0.84	0.90
PAM13-I 10	0.45	−0.41	−0.50	2.24	0.3	0.89	0.89
PAM13-I 5	0.52	−0.80	0.06	2.31	0.3	0.86	0.89
PAM13-I 8	0.53	−1.02	0.26	2.35	0.3	0.92	0.96
PAM13-I 11	0.60	−0.73	0.02	2.50	0.3	0.76	0.74
PAM13-I 13	0.66	−0.75	0.06	2.66	0.3	0.91	0.93
PAM13-I 9	0.81	−0.38	0.25	2.56	0.3	1.02	1.14
PAM13-I 12	0.88	−0.85	0.60	2.90	0.3	0.85	0.85

^aInfit MSQ reflects the similarity of observed responses from model expected response. Being most sensitive when the item and respondent are close together on the activation scale
^bOutfit MSQ is reflects unexpected observations with respect to the respondent’s other responses. It is most sensitive when the item location on the scale is far away from the person’s location on the scale

ISSN: 1472-6947