Table 4.

Associations of overall disability and disability in components of everyday competence, as measured by the Tokyo Metropolitan Institute of Gerontology Index of Competence (TMIG-IC)⁽⁶⁾, with the dietary inflammatory index (DII) score⁽¹⁷⁾ (n 1642)^*

	Overall		IADL		Intellectual activity		Social participation
	OR	95 % CI	OR	95 % CI	OR	95 % CI	OR	95 % CI
DII score	1·26	1·16, 1·36	1·16	1·07, 1·26	1·30	1·20, 1·40	1·20	1·11, 1·29
Sex
Male (ref)
Female	0·54	0·42, 0·69	0·53	0·41, 0·68	0·90	0·70, 1·15	0·59	0·46, 0·74
Age	1·08	1·06, 1·10	1·11	1·09, 1·13	1·06	1·05, 1·08	1·07	1·06, 1·09
BMI	0·97	0·94, 1·00	0·96	0·93, 1·00	0·98	0·95, 1·02	0·97	0·94, 1·00
Education
≤ 9 years (ref)
≥ 10 years	0·63	0·50, 0·79	0·69	0·54, 0·88	0·42	0·34, 0·52	0·90	0·72, 1·12
Economic status
Constrained (ref)
Normal or good	0·61	0·48, 0·77	0·69	0·54, 0·88	0·63	0·50, 0·80	0·72	0·58, 0·90

IADL, instrumental activities of daily living.

^*The associations of the DII score (explanatory variable) with overall disability, as measured by the Tokyo Metropolitan Institute of Gerontology Index of Competence (TMIG-IC), and disability in each component of competence (IADL, intellectual activity and social participation) (outcome variables) were examined individually by multiple logistic regression analysis. The following variables were included as covariates: sex, age, BMI, education, economic status and energy intake. Energy intake was included as a covariate for energy adjustment. Overall disability/disability in each component of competence was defined as a deficit in one or more of the activities included in the TMIG-IC questionnaire or the corresponding component. The reference group was not disabled; the OR represent the odds of being disabled.