Consistency of supplied food and dentition status of the elderly in residential care homes

BMC Oral Health

Table 3 Logistic regression analysis of ordinary and processed meals according to number of tooth contact pairs in the premolar and molar regions for subgroups by care levels

	Odds ratio (95% CI)	P
Support required 1 and 2 and Care levels 1 and 2 (n = 133)
Natural teeth/natural teeth	1.16 (0.85–1.77)	0.341
Natural teeth/dentures	1.06 (0.84–1.33)	0.581
Dentures/dentures	1.03 (0.87–1.20)	0.722
Care levels 3, 4, and 5 (n = 145)
Natural teeth/natural teeth	1.43 (1.13–2.25)	0.004
Natural teeth/dentures	1.42 (1.11–1.95)	0.004
Dentures/dentures	1.26 (1.10–1.55)	0.003

Effect of the number of tooth contact pairs on supplied food consistency by subgroup analysis by care levels. Care levels were dichotomized by ROC analysis. Food consistency was affected by the number of tooth contact pairs for the subjects with intensive care levels. In contrast, food consistency was not affected by the number of tooth contact pairs for subjects who needed partial care for daily living, including eating
For the subgroup of care levels 3, 4 and 5, post hoc sample size calculations were carried out. The sample size to obtain statistically significant odds ratios were 71, 55 and 50 samples for the number of natural teeth/natural teeth, natural teeth/dentures, and dentures/denture contact, respectively

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