A simple scoring algorithm based on intrinsic capacity for functional ability in community-dwelling older adults in Taiwan

Table 4 Development and performance of the simple scoring algorithm developed in this study for predicting abnormality of IADL and CFS in older adults

	Score for predicting IADL disability				Score for predicting frailty worse
	AOR	Regression coefficient	Weighting	Non-weighting	AOR	Regression coefficient	Weighting	Non-weighting
Impaired IC domain
Cognition	1.76	0.56	6	1	1.56	0.44	4	1
Locomotion	5.28	1.66	17	1	16.27	2.79	28	1
Vitality	1.75	0.56	6	1	2.30	0.83	8	1
Vision	1.35	0.30	0	0	1.09	0.09	0	0
Hearing	1.50	0.40	4	1	2.40	0.88	9	1
Psychological	2.17	0.78	8	1	2.92	1.07	11	1
Medication	4.17	1.43	14	1	3.37	1.21	12	1
Total score range			0 − 55	0 − 6			0 − 72	0 − 6
Model performance
AUC (95% CI)			0.80 (0.77–0.83)	0.78 (0.74–0.81)			0.90 (0.87–0.92)	0.86 (0.84–0.90)
Optimal cut-off point			13	2			16	2
Sensitivity			0.74	0.66			0.92	0.79
Specificity			0.75	0.80			0.77	0.80
PPV			0.44	0.46			0.44	0.43
NPV			0.92	0.90			0.98	0.95

IC: intrinsic capacity; IADL: instrumental activity of daily living; AUC: area under the ROC curve; PPV: positive predict value; NPV: negative predict value; AOR: adjusted odds ratio

ISSN: 1471-2318