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Table 1 Sample Characteristics by Cognitive Status

From: Comparing emergency department use among individuals with varying levels of cognitive impairment

Characteristics Total N = 779 Frequency (Relative Frequency) Cognitively Intact N = 89 Frequency (Relative Frequency) MCI N = 372 Frequency (Relative Frequency) ADRD N = 318 Frequency (Relative Frequency)
Age
 Mean (SD) 76.3 (8.7) 72.1 (7.8) 75.9 (8.4) 78.0 (8.8)
Sex
 Male 331 (42.49) 35 (39.33) 178 (47.85) 118 (37.11)
 Female 448 (57.51) 54 (60.67 194 (52.15) 200 (62.89)
Race
 White 741 (95.61) 88 (98.88) 357 (96.75) 296 (93.38)
 Non-white 34 (4.39) *** 12 (3.25) 21 (6.62)
Education
  < 12 years 51 (6.55) 3 (3.37) 216 (58.06) 34 (10.69)
 12 years 172 (22.08) 15 (16.85) 68 (18.28) 89 (27.99)
 13–15 years 142 (18.23) 12 (13.48) 74 (19.89) 56 (17.61)
 16 + years 414 (53.15) 59 (66.29) 216 (58.06) 139 (43.71)
Elixhauser Comorbidity Score
 Mean (SD) 2.8 (2.0) 2.8 (2.1) 2.7 (1.9) 2.8 (1.9)
MMSE
 Mean (SD) 25.3 (4.1) 28.9 (1.2) 26.8 (2.3) 22.5 (4.4)
ED Visits within one year of memory clinic visit
 Proportion of Population with 1 + ED Visit (95%CI)* 0.26 (0.23–0.29) 0.17 (0.10–0.26) 0.26 (0.22–0.31) 0.29 (0.24–0.34)
 Median ED Visits (IQR)* 0 (0, 1) 0 (0, 0) 0 (0, 1) 0 (0, 1)
  1. *p < 0.1
  2. ADRD Alzheimer’s Disease and Related Dementia, SD Standard Deviation, MMSE Mini Mental State Examination, ED Emergency Department, IQR Interquartile Range