Table 2.
Demographic Characteristics of 8,090 HRS Participants
| Characteristic | 1 Low NSES Poor Sleep |
2 Low NSES Good Sleep |
3 High NSES Poor Sleep |
4 High NSES Good Sleep |
Total | p-value |
|---|---|---|---|---|---|---|
| n | 1,536 | 1,772 | 2,049 | 2,733 | 8,090 | |
| Age (SD) | 67.9 (3.7) | 67.9 (3.6) | 67.4 (3.5) | 67.1 (3.0) | 67.5 (3.4) | <.0001 |
| Female Sex (%) | 1,014 (66.0) | 984 (55.5) | 1,263 (61.6) | 1,402 (51.3) | 4,663 (57.6) | <.0001 |
| Education (yrs; SD) | 11.1 (3.5) | 11.5 (3.5) | 12.9 (2.7) | 13.3 (2.7) | 12.4 (3.2) | <.0001 |
| Race (White; %) | 1,129 (73.5) | 1,298 (73.3) | 1,934 (94.4) | 2,573 (94.2) | 6,934 (85.7) | <.0001 |
| APOE ε4+ (%) | 425 (27.7) | 511 (28.8) | 505 (24.7) | 726 (26.6) | 2,167 (26.8) | 0.01 |
| BMI (SD) | 28.6 (5.8) | 27.9 (5.2) | 27.5 (5.1) | 27.2 (5.0) | 27.7 (5.3) | <.0001 |
| Hypertension†(%) | 866 (56.4) | 876 (49.4) | 1,050 (51.2) | 1,199 (43.9) | 3,991 (49.3) | <.0001 |
| Diabetes†(%) | 299 (19.5) | 257 (14.5) | 264 (12.9) | 287 (10.5) | 1,107 (13.7) | <.0001 |
| Stroke†(%) | 75 (4.9) | 71 (4.0) | 61 (3.0) | 79 (2.9) | 286 (3.5) | <.0001 |
| Any Heart†*(%) | 415 (27.0) | 390 (22.0) | 519 (25.3) | 569 (20.8) | 1,893 (23.4) | <.0001 |
| Normal weight (BMI<25)(%) | 402 (26.2) | 513 (29.0) | 649 (31.7) | 970 (35.5) | 2534 (31.3) | <.0001 |
| Overweight (25≤BMI<30) (%) | 602 (39.4) | 763 (43.1) | 876 (42.8) | 1088 (39.8) | 3332 (41.2) | |
| Obese (30≤BMI<40) (%) | 467 (30.4) | 451 (25.5) | 471 (23.0) | 615 (22.5) | 2004 (24.8) | |
| Obese (BMI≥40) (%) | 62 (4.0) | 45 (2.5) | 53 (2.6) | 60 (2.2) | 220 (2.7) | |
| Smoking (%) | 850 (55.5) | 1,018 (57.9) | 1,176 (57.7) | 1,571 (57.7) | 4,615 (57.3) | 0.440 |
Abbreviations: APOE= Apolipoprotein E gene; BMI=body mass index; HRS=Health and Retirement Study; NSES=Neighborhood socio-economic status; SD=standard deviation.
†
Cardiovascular variables are reported here as ever/never having the condition rather than baseline status.
*
Any Heart Condition includes: heart attack, coronary heart disease, angina, congestive heart failure, or other heart problems