. Author manuscript; available in PMC: 2025 Dec 3.

Published in final edited form as: J Evid Based Dent Pract. 2023 Oct 18;24(1 Suppl):101947. doi: 10.1016/j.jebdp.2023.101947

Table 4.

Internal consistency measured by Cronbach’s alpha and item-rest for the modified and the original OHIP-5.

	Modified OHIP-5		Original OHIP-5
	Alpha when item is deleted (lower limit of 95% confidence interval)	Average interitem correlation	Alpha when item is deleted (lower limit of 95% confidence interval)	Average interitem correlation
Difficulty chewing	0.77	0.45	0.76	0.44
Painful aching	0.81	0.51	0.81	0.51
Uncomfortable about appearance	0.73	0.40	0.79	0.49
Less flavor in food	0.72	0.40	0.75	0.43
Difficulty doing daily jobs	0.83	0.55	0.80	0.51
Scale	*0.81 (0.76)*	*0.46*	*0.82 (0.77)*	*0.48*