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Table 1 Characteristics of the study sample at baseline (n = 453)

From: Outcomes of stable and unstable patterns of subjective cognitive decline – results from the Leipzig Longitudinal Study of the Aged (LEILA75+)

Variablesa Total (n = 453) Stable SCD (n = 84) Unstable SCD (n = 195) CON (n = 174) P Value (group difference)b
Age, mean (SD) 80.49 (4.21) 81.65 (4.49) 80.20 (4.07) 80.01 (4.06) <.05
Gender, n (%)
 Male 125 (27.6) 24 (28.6) 58 (29.7) 43 (24.7)  
 Female 328 (72.7) 60 (71.4) 137 (70.3) 131 (75.3) .55
Education, n (%)
 Low 306 (67.7) 59 (71.1) 140 (71.8) 107 (61.5)  
 Middle 92 (20.4) 13 (15.7) 35 (17.9) 44 (25.3)
 High 54 (11.9) 11 (13.3) 20 (10.3) 23 (13.2) .20
Cognitive functioning/MMSE, mean (SD) 28.14 (1.27) 27.76 (1.19) 28.19 (1.31) 28.27 (1.23) <.01
Depressive symptoms/CES-D, mean (SD) 13.55 (7.25) 16.47 (7.17) 13.64 (6.99) 12.07 (7.20) <.001
Follow-up time, years, mean (SD) 4.83 (2.22) 4.01 (2.11) 5.61 (1.90) 4.37 (2.32) <.001
  1. Abbreviations: CES-D 20-item Center of Epidemiologic Studies Depression Scale, CON controls/individuals without SCD, MMSE Mini-Mental State Examination, SCD subjective cognitive decline
  2. aMissing values, n(%): education = 1 (0.2 %); depressive symptoms: 28 (6.2 %); group statistic based on Kruskal-Wallis-tests for continuous variables and χ2 tests categorical variables
  3. bStable SCD vs. unstable SCD vs. CON