Table 1 Characteristics of the study sample
From: Interrelationships among sedentary time, sleep duration, and the metabolic syndrome in adults
Characteristic | N = 1371 | Prevalence (%) | Mean (SD) |
|---|---|---|---|
Demographic Factors | |||
Sex, % male | 770 | 56.2 | - |
Age (years) | |||
20-39 | 451 | 32.9 | - |
40-59 | 523 | 38.2 | |
60+ | 397 | 29.0 | |
Ethnicity | - | ||
Non-Hispanic white | 738 | 53.8 | |
Non-Hispanic black | 245 | 17.9 | |
Hispanic | 334 | 24.4 | |
Other | 54 | 3.9 | |
Education | - | ||
< High school | 313 | 22.8 | |
High school graduate | 742 | 54.1 | |
College graduate | 316 | 23.1 | |
Poverty level, % below poverty | 153 | 11.2 | - |
Behavioral Factors | |||
Caffeine consumption, % ≥250 mg/day | 284 | 20.7 | - |
Smoking status | - | ||
Never | 669 | 48.8 | |
Former | 404 | 29.5 | |
Current | 298 | 21.7 | |
Alcohol consumption (drinks/week) | - | ||
None | 312 | 22.8 | |
Some | 1040 | 75.9 | |
Excessive | 19 | 1.4 | |
Sedentary Behavior | - | - | |
Screen time (hours/day) | 2.3 (1.0) | ||
% of total wear time that is sedentary | 56.2 (11.3) | ||
Sleep duration proxy (hours/day) | 8.3 (1.9) | ||
Moderate-to-vigorous physical activity (min/day) | - | - | 7.0 (12.5) |
Metabolic Syndrome Components | |||
Metabolic syndrome, % yes | 512 | 37.4 | - |
Waist circumference (cm), % high | 987 | 72.0 | 97 (14) |
HDL-cholesterol (mg/dL), % low | 418 | 30.5 | 55 (16) |
Triglycerides (mg/dL), % high | 416 | 30.3 | 140 (113) |
Glucose (mg/dL), % high | 521 | 38.0 | 99 (17) |
Systolic blood pressure (mmHg), % high | 518 | 37.8 | 124 (17) |
Diastolic blood pressure (mmHg), % high | 214 | 15.6 | 71 (11) |