Hypovitaminosis D in Geriatric Acute Care Unit: A Biomarker of Longer Length of Stay
Table 1
Characteristics and comparison of the participants separated into two groups based on hypovitaminosis D (i.e., serum 25OHD ≤ 50 nmol/L).
Total cohort
Serum 25OHD concentration
value*
≤50
>50
Demographical measures
Age (years), mean SD
0.407
Female gender, (%)
169 (66.8)
134 (64.7)
35 (76.1)
0.139
AGGIR score (/6), mean SD
0.308
Living at home, (%)
144 (56.9)
123 (59.4)
21 (45.7)
0.088
Clinical measures
Main reason for admission, (%)
0.822
Gait disorders/falls/orthopaedic
98 (38.7)
80 (38.6)
18 (39.1)
Cardiovascular
20 (7.9)
17 (8.2)
5 (10.9)
Respiratory
26 (10.3)
22 (10.6)
6 (13.0)
Digestive
17 (6.7)
11 (5.3)
0 (0.0)
Neuropsychiatric
47 (18.6)
40 (19.3)
8 (17.4)
Social
45 (17.7)
37 (17.9)
9 (19.6)
Number of acute diseases, mean SD
0.059
Number of comorbidities†, mean SD
0.487
Length of stay (days)‡, mean ± SD
0.017
Use of vitamin D supplements, (%)
26 (10.3)
10 (4.8)
17 (36.9)
<0.001
Biological measures
Serum 25OHD concentration (nmol/L), mean SD
<0.001
Creatinine clearance (mL/min), mean SD
0.120
25OHD: 25-hydroxyvitamin D; SD: standard deviation; AGGIR: Autonomy, Gerontology, Iso-Resources Groups. Comparisons based on the Chi-square test or Student's t-test, as appropriate. †Diseases lasting at least 3 months or running a course with minimal change. ‡Number of hospitalization days in the geriatric acute care unit. Calculated from the Cockcroft formula [(140−age years) × weight kg/] × 1.04 for females, and × 1.25 for males. significant (i.e., <0.05) is indicated in bold.
