Translation and psychometric properties of the Chinese (Mandarin) version of the Child Oral Health Impact Profile-Short Form 19 (COHIP-SF 19) for school-age children

Table 2 Internal reliability analysis of COHIP-SF 19 and each subscale (n =620)

Scale (number of items)	Chronbach’s alpha	Corrected item-total correlation	Alpha if an item is deleted
Overall COHIP-SF 19 (19)	0.81	0.29-0.53	0.79-0.81
Oral health (5)	0.59	0.28-0.41	0.49-0.56
Functional well-being (4)	0.56	0.33-0.37	0.47-0.50
Socio-emotional well-being (10)	0.74	0.29-0.53	0.70-0.74

ISSN: 1477-7525