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. 2017 Sep 28;9:312. doi: 10.3389/fnagi.2017.00312

Table 3B.

Description of the clinical and sleep profile of composite score decliners.

N Modality Among composite score decliners Among composite score non-decliners
Time in bed <8.5 h Time in bed >8.5 h P-Chi2 Time in bed < 8.5 h Time in bed >8.5 h P-Chi2
N = 24 N = 25 N = 264 N = 160
Age (Years) 75.0 [70–84] 74.0 [70–87] 0.53** 74.0 [70–88] 74.0 [70–88] 0.28**
Sex Women 17 (70.8%) 16 (64.0%) 0.61 182 (68.9%) 106 (66.3%) 0.57
Men 7 (29.2%) 9 (36.0%) 82 (31.1%) 54 (33.8%)
BMI Normal 10 (41.7%) 11 (44.0%) 0.87 124 (47.1%) 65 (40.9%) 0.21
Overweight or obese 14 (58.3%) 14 (56.0%) 139 (52.9%) 94 (59.1%)
CV and metabolic diseases Absence 8 (33.3%) 5 (20.0%) 0.29 96 (36.4%) 67 (41.9%) 0.26
Presence 16 (66.7%) 20 (80.0%) 168 (64.6%) 93 (58.1%)
Hypnotics intake No 20 (83.3%) 17 (68.0%) 0.21 221 (83.7%) 123 (76.9%) 0.08
Yes 4 (16.7%) 8 (32.0%) 43 (16.3%) 37 (23.1%)
Fatigue scale T1: [0–4] 6 (28.6%) 3 (13.6%) 0.28* 71 (28.1%) 48 (31.6%) 0.45
T2+T3: [5–14] 15 (71.4%) 19 (86.4%) 182 (71.9%) 104 (68.4%)
Depression (BDI scale) Non-depressed: <11 12 (66.7%) 17 (73.9%) 0.61 181 (73.0%) 105 (70.0%) 0.52
Depressed: >11 6 (33.3%) 6 (26.1%) 67 (27.0%) 45 (30.0%)
Night-time sleep (Hour) 7 [3.5–8.25] 8 [5–10] 0.02** 6.5 [3.5–8] 8 [4–10] <0.0001**
Day-time sleep (Hour) 20 [0–60] 20.0 [0–120] 0.84** 15.0 [0–180] 20 [0–140] 0.13**
Naps No 9 (40.9%) 8 (33.3%) 0.59 119 (48.0%) 63 (40.9%) 0.17
Yes 13 (59.1%) 16 (66.7%) 129 (52.0%) 91 (59.1%)
Total sleep Day+night (hour) 7.1 [4.1–8.5] 8.3 [5.0–10.5] 0.009** 7.0 [4.0–11.0] 8.3 [4.0–11.0] <0.0001**
Sleep efficiency (%) 87.5 [50–100] 80 [52.6–100] 0.21** 87.5 [43.8–100] 88.9 [33.3–100] 0.04**
WASO (Hour) 1 [0–4] 2 [0–4.5] 0.02** 1 [0–4.5] 1 [0–8] <0.0001**
EDS <10 18 (78.3%) 17 (80.9%) 0.99* 175 (78.1%) 117 (80.7%) 0.55
>10 5 (21.7%) 4 (19.1%) 49 (21.9%) 28 (19.3%)
Insomnia severity <7 17 (70.8%) 13 (52.0%) 0.18 130 (49.8%) 88 (56.1%) 0.22
>7 7 (29.2%) 12 (48.0%) 131 (50.2%) 69 (44.0%)
RLS 4 signs 4 (17.4%) 3 (12.0%) 0.70* 47 (17.9%) 21 (13.3%) 0.21
Less than 4 signs 19 (82.6%) 22 (88.0%) 215 (82.1%) 137 (86.7%)
RBD No 13 (81.2%) 19 (79.2%) 0.99* 162 (85.3%) 122 (91.7%) 0.08
Yes 3 (18.8%) 5 (20.8%) 28 (14.7%) 11 (8.3%)
Risk of apnea No 9 (50.0%) 9 (42.9%) 0.66 105 (58.7%) 721(66.4%) 0.2
Yes 9 (50.0%) 12 (57.1%) 74 (41.3%) 36 (33.6%)
*

Fisher exact test.

**

Wilcoxon rank test.

The bold values mean that the result is significant with a p-value < 0.05.