TABLE 2.
Sociodemographic and clinical features of all participants and according to the cardiovascular disease (CVD) relative risk, for quantitative variables
| Variables | All participants | Relative risk CVD | p | ||||
|---|---|---|---|---|---|---|---|
| High risk | Others | ||||||
| M/Mdn | ±SD/IQR | M/Mdn | ±SD/IQR | M/Mdn | ±SD/IQR | ||
| Age, years | 31.00 | 15.00 | 38.50 | 15.00 | 30.00 | 13.00 | <.001 |
| Education, years of school | 10.57 | ±2.49 | 9.69 | ±2.37 | 10.78 | ±2.45 | .003 |
| Seniority, years of contract | 4.00 | 10 | 9.00 | 12.00 | 3.50 | 9.00 | .021 |
| SDur work days, hr:min | 06:25 | ±01:27 | 06:01 | ±01:16 | 06:30 | ±01:28 | .021 |
| SDur free days, hr:min | 08:22 | ±01:50 | 08:00 | ±01:33 | 08:28 | ±01:53 | .074 |
| Social jetlag, hr:min | 01:45 | 01:57 | 02:00 | 02:03 | 01:40 | 02:04 | .070 |
| Chronotype, hr:min | 03:54 | 03:54 | 4:18 | 03:04 | 3:48 | 4:05 | .426 |
| Total cholesterol, mg/dl | 182.00 | 94.00 | 259.50 | 19.00 | 172 | 63.00 | <.001 |
| BMI, kg/m2 | 23.90 | 4.9 | 23.9 | 4.9 | 24.10 | 4.9 | .691 |
| Fasting, hr:min | 02:00 | 02:00 | 02:00 | 02:00 | 02:00 | 02:00 | .504 |
| BP systolic, mmHg | 119.00 | 17.00 | 120.50 | 27.00 | 118.00 | 16.00 | .102 |
| BP diastolic, mmHg | 74.00 | 11.00 | 78.00 | 15.00 | 74.00 | 12.00 | .003 |
| Heart rate, bpm | 79.00 | 17.00 | 80.00 | 17.00 | 78.00 | 17.00 | .061 |
| Productivity, items/month | 19 947 | 9 926 | 17 869 | 11 174 | 20 467 | 9 943 | .004 |
| Absenteeism, absences/year | 0 | 1 | 0 | 1 | 0 | 1 | .323 |
Abbreviations: BMI, body mass index; BP, blood pressure; bpm, beats/min; CVD, cardiovascular disease; IQR, interquartile range; M, mean; Mdn, median; SD, standard deviation; SDur, sleep duration.
Data are presented as M ± SD for normally distributed continuous variables, and as Mdn and IQR for non‐normal distributions. Student t test p value for continuous normally distributed variables or Mann–Whitney U test for variables not normally distributed. Statistically significant associations are presented in bold (p < .05). Fasting represents the time elapsed (hr) since last meal when blood was collected for cholesterol analysis. Chronotype = mid‐sleep time on free days, sleep corrected (MSFsc). High‐risk CVD: Systematic COronary Risk Evaluation (SCORE) ≥3; others: SCORE ≤2.