Table 2.
Sleep duration (hours per day) | |||
---|---|---|---|
≤5 | 6 to 8 | ≥9 | |
All participants | 0.5 [0.0] ± 4.0 | 0.2 [0.0] ± 3.8 | 0.6 [0.0] ± 4.3 |
Age Strata | |||
Tertile 1 (≤ 69) | 0.6 [0.0] ± 3.5 (67.1 ± 1.4) | −0.1 [0.0] ± 3.5 (67.1 ± 1.3) | 0.5 [0.0] ± 4.3 (67.1 ± 1.4) |
Tertile 2 (70-74) | 0.4 [0.0] ± 3.7 (71.9 ± 1.4) | 0.0 [0.0] ± 3.7 (71.8 ± 1.4) | 0.5 [0.0] ± 3.8 (72.0 ± 1.3) |
Tertile 3 (≥ 75) | 0.6 [0.0] ± 4.6 (80.2 ± 4.0) | 0.6 [0.0] ± 4.2 (79.9 ± 4.0) | 0.9 [1.0] ± 4.7 (80.3 ± 4.3) |
Depressive symptoms or antidepressant use strata | |||
Yes | 0.3 [0.0] ± 4.5 | 0.2 [0.0] ± 3.6 | 0.8 [0.0] ± 4.4 |
No | 0.6 [0.0] ± 3.7 | 0.2 [0.0] ± 3.9 | 0.6 [0.0] ± 4.3 |
Medications with central nervous system effects strata | |||
Yes | 0.2 [0.0] ± 4.1 | 0.6 [0.0] ± 3.6 | 1.0 [0.5] ± 4.1 |
No | 0.7 [0.0] ± 4.0 | 0.1 [0.0] ± 3.8 | 0.5 [0.0] ± 4.3 |
Geographical área | |||
Las Margaritas | 0.2 [0.0] ± 3.9 | 0.3 [0.0] ± 3.7 | 0.7 [0.0] ± 4.5 |
Lista | 0.1 [0.0] ± 4.4 | 0.1 [0.0] ± 3.9 | 0.3 [0.0] ± 4.3 |
Arévalo | 1.1 [1.0] ± 4.0 | 0.1 [0.0] ± 3.8 | 0.8 [1.0] ± 4.2 |
Mean [Median] ± standard deviation and frequency (%) are reported. Negative value indicates that the baseline 37-MMSE score was lower than the 37-MMSE score at follow-up (i.e., improvement in score). All positive values indicate a decline in score (i.e., baseline 37-MMSE ± follow-up 37-MMSE). In each age stratum, the numbers in parentheses indicate the mean ± standard deviation age of participants in that stratum; these values demonstrate that cases and controls had similar ages within the three age strata.