Self-assessed Impairment of Masticatory Ability and Lower Serum Albumin Levels Among Community-dwelling Elderly Persons

Abstract

Serum albumin is considered a key nutrient that is significantly related to general health among elderly persons. The aim of the present study was to determine the relationship between masticatory ability and serum albumin levels in the elderly. A total of 768 persons were enrolled in the study. Data on background factors and the self-assessed masticatory ability were collected by means of questionnaires. An intraoral examination was performed to examine the pattern of occluding pairs of natural teeth, and blood samples were collected from the cutaneous vein to measure serum albumin levels. A forward stepwise multivariate logistic model was constructed with serum albumin levels as the dependent variable and the self-assessed masticatory ability as the principal independent variable, to adjust for potential confounding variables. Sex, current employment status, social interaction, and self-assessed masticatory ability were retained in the final model, and they were significantly associated with serum albumin levels. The odds ratios for lower levels of serum albumin (≤ 40 g/L) were 1.88 for males, 1.70 for non-working status, 1.55 for low social activity status, and 1.43 for the self-assessed impairment of masticatory ability. A weak, statistically significant relationship may exist between self-assessed impairment of masticatory ability and lower levels of serum albumin in the elderly living independently.