Table 1.
Demographic Overview of Sample and Predictor Variables
| Sample | – Overall Sample | Depressed - Last Two Years |
Depression – Lifetime |
Depression | Sleep Disturbance | |||||
|---|---|---|---|---|---|---|---|---|---|---|
|
| ||||||||||
| Present | Absent | Present | Absent | Present | Absent | Present | Absent | |||
| Sample with Normal Cognition |
11,453 | 2,049 (17.9%) |
9,357 (81.7%) |
2,017 (17.8%) |
9,300 (82.2%) |
1,164 (10.2%) |
10,289 (89.8%) |
1,120 (10.6%) |
9,456 (89.4%) |
|
|
| ||||||||||
| Female | 7,464 (65.2%) |
1,506 (73.5%) |
5,926 (63.3%) |
1,493 (74%) |
5,883 (63.3%) |
872 (74.9%) |
6,592 (64%) |
699 (62.4%) |
6,193 (65.5%) |
|
|
| ||||||||||
| Education | X = 16.01 years (SD: 6.72) |
X = 15.83 years (SD: 6.53) |
X = 16.23 years (SD: 7.13) |
X = 15.80 years (SD: 7.19) |
X = 15.88 years (SD: 7.25) |
|||||
|
| ||||||||||
| Age | X = 71.2 years (SD = 10.89) |
X = 68.7 years (SD:10.81) |
X = 68.1 years (SD:10.58) |
X = 68.7 years (SD: 10.88) |
X = 69.9 years (SD: 10.42) |
|||||
|
| ||||||||||
| Race | White | 9,188 (80.7%) |
1,765 (86.1%) |
7,388 (79.5%) |
1,726 (86.7%) |
7,359 (79.7%) |
955 (83.9%) |
8,233 (80.5%) |
941 (84.6%) |
7,552 (80.4%) |
|
| ||||||||||
| African- American |
1,504 (13.2%) |
161 (7.9%) |
1,337 (14.4%) |
169 (8.5%) |
1,313 (14.2%) |
108 (9.5%) |
1,396 (13.7%) |
100 (9%) |
1,284 (13.7%) |
|
|
| ||||||||||
| Other | 671 (5.9%) |
99 (4.9%) |
567 (6.1%) |
95 (4.8%) |
567 (6.1%) |
76 (6.7%) |
595 (5.8%) |
71 (6.4%) |
554 (5.9%) |
|
|
| ||||||||||
| Mother - Dementia |
Present 3,748 (34.6%) |
Absent 7,090 (65.4%) |
787 (40.3%) |
2,943 (33.3%) |
795 (41.2%) |
2,907 (33%) |
431 (39.3%) |
3,317 (34%) |
367 (34%) |
3,186 (35%) |
|
| ||||||||||
| Father - Dementia |
Present 1,722 (16.3%) |
Absent 8,850 (83.7%) |
344 (18%) |
1,373 (15.9%) |
365 (19.4%) |
1,343 (15.7%) |
191 (18%) |
1,531 (16.1%) |
196 (18.7%) |
1,446 (16.3%) |