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Table 1 Population Demographics and Healthcare Utilization*

From: Comparing clinician descriptions of frailty and geriatric syndromes using electronic health records: a retrospective cohort study

Demographics/Utilizationa Full Population “Frail” Population “Non-Frail” Population
Population (N) 18,341 2202 16,139
Age in years (SD)b 75.9 (7.5) 82.3 (6.8) 75.1 (7.2)
Sex (%)b F 10,806 (58.9)
M 7535 (41.1)
F 1464 (66.5)
M 738 (33.5)
F 9342 (57.8)
M 6797 (42.2)
Average comorbidity count (SD)b 9.16 (4.72) 13.19 (5.23) 8.61 (4.37)
Average medication ingredients (SD)b 12.57 (7.73) 16.81 (8.94) 12.00 (7.36)
Average IP events (SD)b 0.86 (1.59)c
0.86 (0.35)d
0.86 (0.91)e
2.28 (2.67)c
1.15 (0.32)d
1.69 (0.97)e
0.66 (1.26)c
0.82 (0.34)d
0.75 (0.84)e
Average ED events (SD)b 0.62 (1.26)c
0.62 (0.21)d
0.62 (0.44)e
1.25 (2.18)c
0.80 (0.19)d
1.05 (0.45)e
0.53 (1.04)c
0.60 (0.20)d
0.56 (0.41)e
Average readmission events (SD)b 0.15 (0.65)c
0.15 (0.06)d
0.15 (0.22)e
0.51 (1.30)c
0.20 (0.06)d
0.33 (0.24)e
0.10 (0.48)c
0.14 (0.06)d
0.12 (0.20)e
Average months enrollment (SD) 33.3 (5.84) 32.9 (6.09) 33.4 (5.81)
Average number of notes (SD)b 132.00 (107.9) 235.50 (166.4) 117.88 (88.28)
Average number of characters (SD)b 165,766 (141,687) 290,913(215,529) 148,691 (118,534)
  1. * Based on claims data from 2011 to 2013
  2. aThe Johns Hopkins ACG® System was used to generate the utilization rates using administrative claims data. bComparison of the non-frail versus frail population showed significant difference (p < .001) cUnadjusted average and standard deviation. dAdjusted for age and sex. eAdjusted for age and sex, and comorbidity count
  3. Abbreviations – ED: emergency department; F: female; IP: inpatient; M: male; N: count; SD: standard deviation