Table 1.
| F Statistic | ||||||
|---|---|---|---|---|---|---|
| Q1 | Q2 | Q3 | Q4 | Q5 | p-value | |
| Age, % | .01 | |||||
| 20–39 | 30.9 | 29.8 | 32.5 | 30.3 | 27.3 | |
| 40–59 | 35.4 | 36.0 | 39.5 | 39.1 | 43.1 | |
| 60+ | 33.7 | 34.2 | 28.0 | 30.5 | 29.6 | |
| Women, % | 46.0 | 51.9 | 50.4 | 55.1 | 57.2 | <.0001 |
| Race/ethnicity, % | <.0001 | |||||
| Non-Hispanic white | 61.6 | 64.4 | 66.7 | 70.6 | 74.7 | |
| Non-Hispanic black | 17.6 | 13.8 | 10.9 | 9.0 | 4.3 | |
| Hispanic | 13.1 | 12.8 | 14.2 | 14.4 | 15.5 | |
| Other | 7.7 | 9.0 | 8.1 | 5.9 | 5.5 | |
| Less than high school, % | 16.9 | 16.2 | 14.8 | 15.2 | 16.6 | <.0001 |
| Household income<$20k, % | 21.3 | 19.6 | 13.3 | 11.7 | 10.5 | <.0001 |
| Married, % | 41.8 | 50.2 | 57.7 | 60.2 | 67.7 | <.0001 |
| Current smoker, % | 29.8 | 21.5 | 18.9 | 13.1 | 13.6 | <.0001 |
| Alcohol, 1+ drink/day, % | 13.4 | 13.6 | 15.2 | 16.2 | 14.9 | 0.01 |
| Sleep duration, % | <.0001 | |||||
| <7 hours | 45.0 | 42.9 | 46.2 | 45.9 | 45.5 | |
| 7–9 hours | 23.1 | 30.4 | 33.6 | 36.5 | 41.4 | |
| >9 hours | 31.9 | 26.7 | 20.1 | 17.6 | 13.1 | |
| Total activity count, dmedian (IQR) | 8801 (6833, 11350) |
9956 (8198, 11833) |
10922 (9346, 12583) |
11348 (9805, 13271) |
12918 (11074, 14625) |
<.0001 |
| Obese, e % | 45.6 | 44.1 | 40.3 | 35.6 | 29.4 | <.0001 |
| Total energy intake, kcal, median (IQR) | ||||||
| Men | 2246 (1737, 2868) |
2224 (1693, 2684) |
2517 (1977, 3131) |
2220 (1738, 2731) |
2454 (1958, 2968) |
.01 |
| Women | 1716 (1321, 2157) |
1686 (1341, 2094) |
1709 (1411, 2128) |
1783 (1424, 2203) |
1759 (1448, 2121) |
.69 |
aAll percentages, median and IQR are weighted using sample weights.
bF statistic is a model fitness measure and higher values indicate stronger overall rhythmicity.
c p-values were derived from Chi-square test for categorical variables, analysis of variance for total energy intake, and Kruskal-Wallis test for total activity count.
dmeasured as the total daily sum of the Monitor-Independent Movement Summary triaxial value.
eDefined as body mass index ≥30.
Abbreviations: NHANES, National Health and Nutrition Examination Survey; IQR, interquartile range.