Physical function and self-rated health status as predictors of mortality: results from longitudinal analysis in the ilSIRENTE study

Table 1 Main characteristics (mean ± standard deviation, or percentage) of the study sample according to mortality.

	Death (n = 71)	No death (n = 264)	p
Sociodemographic
Age (years)	87.5 ± 5.2	85.0 ± 4.6	<0.001
Gender (women)	64.8	67.0	0.72
Education (years)	4.9 ± 1.1	5.2 ± 1.8	0.14
Current smoking	2.8	2.3	0.79
Body Mass Index (kg/m²)	24.4 ± 4.2	26.1 ± 4.5	0.003
Cognitive Performance Scale	1.6 ± 1.9	0.6 ± 1.3	<0.001
Clinical conditions
Coronary artery disease	15.5	11.0	0.30
Congestive heart failure	15.5	3.4	<0.001
Cerebrovascular disease	14.1	1.9	<0.001
Cancer	8.5	3.4	0.07
Depression	35.2	23.9	0.05
Diabetes	36.6	25.0	0.05
Dementia	14.1	5.3	0.01
Number of clinical conditions	1.4 ± 1.2	0.7 ± 0.8	<0.001
Biological markers
Albumin (g/dL)	4.1 ± 0.4	4.2 ± 0.3	0.001
Total cholesterol (mg/dL)	178.7 ± 38.0	203.6 ± 45.2	<0.001
C-reactive protein (mg/L)	5.1 (2.5–7.4)	2.5 (1.3–4.6)	<0.001
Physical performance measures
4-meter walking speed	0.35 ± 0.30	0.55 ± 0.28	<0.001
SPPB score (0–12)	4.0 ± 3.3	7.1 ± 3.3	<0.001
Walk test (0–4)	1.3 ± 1.1	2.1 ± 1.2	<0.001
Chair stand test (0–4)	0.7 ± 1.1	1.8 ± 1.4	<0.001
Balance test (0–4)	2.0 ± 1.6	3.1 ± 1.3	<0.001
Hand grip strength (kg)	27.7 ± 14.4	33.2 ± 13.7	<0.001
Functional status measures
ADL score	4.3 ± 2.2	6.2 ± 1.8	<0.001
IADL score	2.4 ± 2.5	4.7 ± 2.3	<0.001
Self-rated health status
Self-Rated Health score	2.97 ± 0.89	3.48 ± 0.83	<0.001

SPPB: Short Physical Performance Battery; ADL: Basic Activities of Daily Living (range 0 [totally dependent] – 7 [totally independent]); IADL: Instrumental Activities of Daily Living (range 0 [totally dependent] – 7 [totally independent]).
Cognitive Performance Scale range: 0 (best) – 6 (worst); Self-Rated Health score range: 1 (worst) – 5 (best).

ISSN: 1471-2318