Physical Health and Cognitive Function Independently Contributed to Functional Disability among Chinese Older Adults: Data from Two Asian Metropolises

Table 2

The independent contributions of health variables and environment to disability*: combined analysis.

Variable	Logistic regression
	OR (95% CI)	𝑃
Number of chronic diseases	1.35 (1.22–1.50)	<0.001
Self-rated health status^†	2.85 (2.36–3.43)	<0.001
MMSE total score	0.89 (0.85–0.94)	<0.001
Environment
Shanghai 1987	1.0
Singapore 2003	0.68 (0.48–0.96)	0.03

*Defined as needing assistance in performing at least one of the eight Activities of Daily Living.
^†Range from 1 (excellent or very good) to 4 (poor), with higher value representing poorer health.
MMSE: Mini-Mental State Examination.
Variables in the model: age, gender, number of diseases, self-rated health status, MMSE total score, and environment (study sample).