Table 1. Participant Characteristics.
| Characteristic | Participant group, No. (%) | ||
|---|---|---|---|
| All (N = 3427) | No depression (n = 2588) | Depression (n = 839) | |
| Sex | |||
| Men | 1692 (49.4) | 1343 (51.9) | 349 (41.6) |
| Women | 1735 (50.6) | 1245 (48.1) | 490 (58.4) |
| Age, y | |||
| <65 | 2683 (78.3) | 2037 (78.7) | 646 (77.0) |
| ≥65 | 744 (21.7) | 551 (21.3) | 193 (23.0) |
| Race and ethnic origin | |||
| Mexican American | 570 (16.6) | 440 (17.0) | 130 (15.5) |
| Non-Hispanic Black | 679 (19.8) | 493 (19.0) | 186 (22.2) |
| Non-Hispanic White | 1314 (38.3) | 988 (38.2) | 326 (38.9) |
| Other Hispanic | 382 (11.1) | 284 (11.0) | 98 (11.7) |
| Other racea | 482 (14.1) | 383 (14.8) | 99 (11.8) |
| Educational level | |||
| Less than 9th grade | 371 (10.8) | 263 (10.2) | 108 (12.9) |
| 9th-11th grade | 405 (11.8) | 266 (10.3) | 139 (16.6) |
| High school graduate, GED, or equivalent | 799 (23.3) | 592 (22.9) | 207 (24.7) |
| Some college or AA degree | 1852 (54.0) | 1467 (56.7) | 385 (45.9) |
| Ratio of family income to poverty | |||
| <1.07 | 899 (26.2) | 600 (23.2) | 299 (35.6) |
| 1.07 to <2.06 | 834 (24.3) | 622 (24.0) | 212 (25.3) |
| 2.06 to <3.93 | 845 (24.7) | 651 (25.2) | 194 (23.1) |
| ≥3.93 | 849 (24.8) | 715 (27.6) | 134 (16.0) |
| BMI | |||
| <25 | 1020 (29.8) | 783 (30.3) | 237 (28.2) |
| 25 to <30 | 1094 (31.9) | 857 (33.1) | 237 (28.2) |
| ≥30 | 1313 (38.3) | 948 (36.6) | 365 (43.5) |
| Sleep duration, h | |||
| 6-8 | 2372 (69.2) | 1871 (72.3) | 501 (59.7) |
| <6 | 381 (11.1) | 230 (8.9) | 151 (18.0) |
| >8 | 674 (19.7) | 487 (18.8) | 187 (22.3) |
| Alcohol consumption | |||
| Yes | 2402 (70.1) | 1802 (69.6) | 600 (71.5) |
| No | 1025 (29.9) | 786 (30.4) | 239 (28.5) |
| eGFR, mL/min/1.73 m2 | |||
| <66.56 | 854 (24.9) | 643 (24.8) | 211 (25.1) |
| 66.56 to <84.02 | 855 (24.9) | 666 (25.7) | 189 (22.5) |
| 84.02 to <100.18 | 850 (24.8) | 631 (24.4) | 219 (26.1) |
| ≥100.18 | 868 (25.3) | 648 (25.0) | 220 (26.2) |
| Sample collection time | |||
| Morning | 1612 (47.0) | 1243 (48.0) | 369 (44.0) |
| Afternoon | 1254 (36.6) | 928 (35.9) | 326 (38.9) |
| Evening | 561 (16.4) | 417 (16.1) | 144 (17.2) |
| 6-mo Survey period | |||
| November 1 through April 30 | 1716 (50.1) | 1288 (49.8) | 428 (51.0) |
| May 1 through October 31 | 1711 (49.9) | 1300 (50.2) | 411 (49.0) |
| Survey cycles | |||
| 2013-2014 | 1754 (51.2) | 1327 (51.3) | 427 (50.9) |
| 2015-2016 | 1673 (48.8) | 1261 (48.7) | 412 (49.1) |
Abbreviations: AA, Associate in Arts; BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); eGFR, estimated glomerular filtration rate; GED, General Educational Development.
a
Includes participants who identified as non-Hispanic multiracial.