Table 3.

Rasch Rating Scale Model Item Fit Statistics for the TeHLI

Transactional eHealth Literacy Instrument (TeHLI)	MSQ Infit	MSQ Outfit
Functionala
1. I can summarize basic health information from the Internet in my own words.	0.76	0.84
2. I know how to access basic health information on the Internet.	0.58	0.47
3. I can use my computer to create messages that describe my health needs.	0.83	0.77
4. I have the skills I need to tell someone how to find basic health information on the Internet.	0.69	0.68
Communicative (COM)b
1. I can achieve my health information goals on the Internet while helping other users achieve theirs.	1.14	1.22
2. I have the skills I need to talk about health topics on the Internet with multiple users at the same time.	0.70	0.70
3. I can identify the emotional tone of a health conversation on the Internet.	0.89	0.91
4. I have the skills I need to contribute to health conversations on the Internet.	0.61	0.60
5. I have the skills I need to build personal connections with other Internet users who share health information.	0.72	0.71
Critical (CRIT)c
1. I can tell when an Internet user is a credible source of health information.	0.62	0.64
2. I can tell when health information on the Internet is fake.	0.62	0.61
3. I can tell when a health website is safe for sharing my personal health information.	0.95	0.95
4. I can tell when information on the Internet is relevant to my health needs.	0.97	0.91
5. I know how to evaluate the credibility of Internet users who share health information.	0.86	0.88
Translational (TRANSL)d
1. I can use the Internet to learn how to manage my health in a positive way.	0.69	0.71
2. I can use the Internet as a tool to improve my health.	0.67	0.64
3. I can use information on the Internet to make an informed decision about my health.	0.78	0.78
4. I can use the Internet to learn about topics that are relevant to me.	0.59	0.51

Note. MSQ = Mean Square

^aReliability = .88 and Separation = 7.51

^bReliability = .91 and Separation = 10.55

^cReliability = .88 and Separation = 7.85

^dReliability = .81 and Separation = 4.37