Table 2.
Descriptive Statistics of Sociodemographic and Study Variables of Interest.
| M | (SD) | Min | Max | Skewness | Kurtosis | |
|---|---|---|---|---|---|---|
| T1 Age | 45.616 | (11.408) | 20 | 74 | 0.236 | −0.703 |
| T2 Age | 54.544 | (11.352) | 30 | 84 | 0.238 | −0.704 |
| T3 Age | 63.641 | (11.350) | 39 | 93 | 0.240 | −0.706 |
| Gender | ||||||
| Men, n (%) | 1477 | (44.839) | – | – | 4.287 | 38.768 |
| Women, n (%) | 1799 | (54.614) | – | – | – | – |
| Declined to disclose, n (%) | 18 | (0.546) | – | – | – | – |
| Ethnicity | ||||||
| White, n (%) | 3061 | (92.927) | – | – | 5.374 | 29.892 |
| African American, n (%) | 107 | (3.248) | – | – | – | – |
| Native American, n (%) | 11 | (0.334) | – | – | – | – |
| Asian or Pacific Islander, n (%) | 15 | (0.455) | – | – | – | – |
| Other, n (%) | 41 | (1.245) | – | – | – | – |
| Multiracial, n (%) | 23 | (0.699) | – | – | – | – |
| Declined to disclose or missing, n (%) | 36 | (1.093) | – | – | – | – |
| T2 PSQI Subjective sleep quality | 0.963 | (0.674) | 0 | 3 | 0.475 | 0.569 |
| T2 PSQI Sleep latency | 0.949 | (1.189) | 0 | 8 | 2.776 | 12.846 |
| T2 PSQI Sleep duration | 0.792 | (0.746) | 0 | 3 | 0.785 | 0.486 |
| T2 PSQI Habitual sleep efficiency | 0.558 | (0.969) | 0 | 3 | 1.601 | 1.206 |
| T2 PSQI Sleep disturbances | 1.299 | (0.641) | 0 | 8 | 2.876 | 25.301 |
| T2 PSQI Daytime dysfunction | 0.782 | (0.663) | 0 | 3 | 0.499 | 0.201 |
| T1 MDD Loss of interest | 0.164 | (0.370) | 0 | 1 | 1.815 | 1.293 |
| T1 MDD Fatigue | 0.123 | (0.328) | 0 | 1 | 2.295 | 3.270 |
| T1 MDD Appetite change | 0.072 | (0.258) | 0 | 1 | 3.320 | 9.027 |
| T1 MDD Sleep problems | 0.097 | (0.296) | 0 | 1 | 2.719 | 5.396 |
| T1 MDD Focusing issues | 0.120 | (0.325) | 0 | 1 | 2.334 | 3.451 |
| T1 MDD Depressed mood | 0.088 | (0.284) | 0 | 1 | 2.900 | 6.411 |
| T1 MDD Thoughts of death | 0.078 | (0.268) | 0 | 1 | 3.145 | 7.895 |
| M | (SD) | Min | Max | Skewness | Kurtosis | |
| T2 MDD Loss of interest | 0.140 | (0.347) | 0 | 1 | 2.075 | 2.305 |
| T2 MDD Fatigue | 0.108 | (0.311) | 0 | 1 | 2.518 | 4.344 |
| T2 MDD Appetite change | 0.064 | (0.244) | 0 | 1 | 3.570 | 10.745 |
| T2 MDD Sleep problems | 0.086 | (0.280) | 0 | 1 | 2.961 | 6.769 |
| T2 MDD Focusing issues | 0.100 | (0.299) | 0 | 1 | 2.673 | 5.148 |
| T2 MDD Depressed mood | 0.074 | (0.262) | 0 | 1 | 3.243 | 8.518 |
| T2 MDD Thoughts of death | 0.069 | (0.254) | 0 | 1 | 3.393 | 9.514 |
| T3 MDD Loss of interest | 0.160 | (0.367) | 0 | 1 | 1.854 | 1.438 |
| T3 MDD Fatigue | 0.114 | (0.318) | 0 | 1 | 2.421 | 3.862 |
| T3 MDD Appetite change | 0.068 | (0.252) | 0 | 1 | 3.430 | 9.771 |
| T3 MDD Sleep problems | 0.086 | (0.281) | 0 | 1 | 2.947 | 6.687 |
| T3 MDD Focusing issues | 0.100 | (0.300) | 0 | 1 | 2.662 | 5.088 |
| T3 MDD Depressed mood | 0.075 | (0.263) | 0 | 1 | 3.226 | 8.410 |
| T3 MDD Thoughts of death | 0.073 | (0.260) | 0 | 1 | 3.277 | 8.740 |
| T1 GAD Restlessness | 0.815 | (1.327) | 0 | 4 | 1.197 | −0.261 |
| T1 GAD Irritability | 0.780 | (1.274) | 0 | 4 | 1.208 | −0.233 |
| T1 GAD Sleep issues | 0.837 | (1.384) | 0 | 4 | 1.262 | −0.077 |
| T1 GAD Concentration problems | 0.863 | (1.395) | 0 | 4 | 1.164 | −0.362 |
| T1 GAD Low energy | 0.845 | (1.394) | 0 | 4 | 1.255 | −0.096 |
| T1 GAD Muscle tension | 0.896 | (1.477) | 0 | 4 | 1.234 | −0.208 |
| T2 GAD Restlessness | 0.701 | (1.270) | 0 | 4 | 1.439 | 0.395 |
| T2 GAD Irritability | 0.684 | (1.246) | 0 | 4 | 1.461 | 0.473 |
| T2 GAD Sleep issues | 0.685 | (1.281) | 0 | 4 | 1.578 | 0.891 |
| T2 GAD Concentration problems | 0.715 | (1.304) | 0 | 4 | 1.465 | 0.475 |
| T2 GAD Low energy | 0.694 | (1.293) | 0 | 4 | 1.566 | 0.841 |
| T2 GAD Muscle tension | 0.744 | (1.386) | 0 | 4 | 1.529 | 0.636 |
| T3 GAD Restlessness | 0.688 | (1.267) | 0 | 4 | 1.497 | 0.592 |
| T3 GAD Irritability | 0.681 | (1.255) | 0 | 4 | 1.501 | 0.614 |
| T3 GAD Sleep issues | 0.654 | (1.243) | 0 | 4 | 1.644 | 1.142 |
| T3 GAD Concentration problems | 0.703 | (1.299) | 0 | 4 | 1.500 | 0.582 |
| T3 GAD Low energy | 0.658 | (1.251) | 0 | 4 | 1.648 | 1.159 |
| T3 GAD Muscle tension | 0.759 | (1.413) | 0 | 4 | 1.512 | 0.552 |
| M | (SD) | Min | Max | Skewness | Kurtosis | |
| T1 Chronic sleep problems, n (%) | 332 | (10.079) | – | – | −2.651 | 5.029 |
| T2 Chronic sleep problems, n (%) | 295 | (8.956) | – | – | −2.874 | 6.259 |
| T3 Chronic sleep problems, n (%) | 338 | (10.261) | – | – | −2.618 | 4.855 |
| T1 Number of chronic conditions | 2.133 | (2.290) | 0 | 21 | 1.707 | 4.733 |
| T2 Number of chronic conditions | 2.010 | (2.338) | 0 | 30 | 2.366 | 12.731 |
| T3 Number of chronic conditions | 2.638 | (3.107) | 0 | 20 | 1.677 | 3.440 |
| T1 Number of medications | 0.000 | (0.000) | 0 | 0 | – | – |
| T2 Number of medications | 1.243 | (1.562) | 0 | 12 | 1.749 | 4.910 |
| T3 Number of medications | 1.214 | (1.483) | 0 | 9 | 1.351 | 1.817 |
| T1 Regular physical exercise, n (%) | 619 | (18.792) | – | – | −1.597 | 0.551 |
| T2 Regular physical exercise, n (%) | 767 | (23.285) | – | – | −1.264 | −0.403 |
| T3 Regular physical exercise, n (%) | 965 | (29.296) | – | – | −0.909 | −1.173 |
| T1 Household total income ($) | 76200.516 | (64898.144) | 0 | 300000 | 1.377 | 1.741 |
| T2 Household total income ($) | 59698.427 | (55561.518) | 0 | 298750 | 1.185 | 1.563 |
| T3 Household total income ($) | 58966.910 | (64082.607) | 0 | 299250 | 1.249 | 1.208 |
| T1 Current financial situation | 6.008 | (2.462) | 0 | 10 | −0.848 | 0.255 |
| T2 Current financial situation | 5.709 | (2.961) | 0 | 10 | −0.773 | −0.470 |
| T3 Current financial situation | 5.470 | (3.308) | 0 | 10 | −0.582 | −1.001 |
Note. GAD = generalized anxiety disorder; MDD = major depressive disorder; Max = maximum; Min = minimum; PSQI = Pittsburgh sleep quality index.
Note. The current financial situation was measured on a scale of 0 = the worst possible financial crisis to 10 = the best possible financial situation.