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Table 1 Baseline characteristics of participants with persistent MPS and controls

From: Prospective longitudinal course of cognition in older subjects with mild parkinsonian signs

  Controls (n = 428) Persistent MPS (n = 52) p value
Male gender (N (%)) 182 (43) 34 (65) 0.002
Age (years) 62 (50–80) 67 (51–77) <0.001
(62 ± 7) (67 ± 6)
Education (years) 14 (9–21) 13 (9–21) 0.030
(15 ± 3) (14 ± 3)
Family history PD (%) 63 (15) 8 (15) 0.838
Family history dementia (%) 167 (39) 12 (23) 0.033
MMSE (0–30) 29 (25–30) 29 (25–30) 0.173
(29 ± 1) (28 ± 1)
MDS-UPDRS-III (0–132) 0 (0–10) 4 (2–17) <0.001
(1 ± 2) (5 ± 3)
Lifetime depression (%) 155 (36) 20 (39) 0.762
Hyposmia (%) 95 (22) 15 (29) 0.216
RBD (%) 81 (19) 18 (35) 0.011
BDI-I (0–63) 6 (0–38) 6 (0–38) 0.121
(7 ± 6) (9 ± 7)
Hyperechogenic substantia nigra (%) 106 (25) 19 (37) 0.075
ApoE4 positive (%) 94 (22) 12 (23) 0.931
  1. Data are presented as median (range) (mean ± standard deviation) or number (percentage of total)
  2. ApoE4 apolipoprotein 4, BDI-I Beck Depression Inventory I, MMSE Mini Mental State Examination, MPS mild parkinsonian signs, PD Parkinson’s disease, RBD rapid eye movement sleep behaviour disorder, MDS-UPDRS-III Unified Parkinson’s Disease Rating Scale part 3