Table 3.
Univariate analysis of socio-demographic, general and sleep caracteristics affecting quality of life of participants
| Variables |
EQ index |
EQ VAS |
||||
|---|---|---|---|---|---|---|
| β | 95% CI | P | β | 95% CI | P | |
|
Socio-demographioc characteristics | ||||||
|
Age (per year) |
0.11 |
−0.01; 0.03 |
0.22 |
0.3 |
−0.9; 1.5 |
0.64 |
|
Sex |
|
|
|
|
|
|
| Male |
0 |
---- |
---- |
7.7 |
−0.9; 16.4 |
0.08 |
| Female |
−0.12 |
−0.25; 0 |
0.05 |
0 |
---- |
---- |
|
Marital status |
|
|
|
|
|
|
| Married |
0 |
---- |
---- |
0 |
---- |
---- |
| Unmarried |
−0.78 |
−0.24; 0.09 |
0.36 |
0.4 |
−10.9; 11.6 |
0.09 |
|
General characteristics |
|
|
|
|
|
|
|
Training year |
|
|
|
|
|
|
| First year |
−0.11 |
−0.24; 0.37 |
0.15 |
−5 |
−14; 4.5 |
0.30 |
| Second year and more |
0 |
--- |
--- |
0 |
---- |
---- |
|
Work hours (per day) |
0 |
−0.002; 0 |
0.26 |
−0.01 |
−0.07; 0.04 |
0.55 |
|
Tabac |
|
|
|
|
|
|
| Yes |
0.08 |
−0.13; 0.3 |
0.45 |
4.3 |
−10.7; 19.5 |
0.5 |
| No |
0 |
--- |
---- |
0 |
---- |
---- |
|
Caffeine intake |
|
|
|
|
|
|
| Yes |
0 |
---- |
---- |
0 |
---- |
---- |
| No |
0.09 |
−0.2; 0.03 |
0.14 |
−10.6 |
−19.01; -2.3 |
0.01 |
|
Exercice |
|
|
|
|
|
|
| Yes |
0 |
---- |
---- |
0 |
---- |
---- |
| No |
−0.18 |
−0.009; -0.35 |
0.04 |
−7.8 |
−19.8; 4.1 |
0.19 |
|
Change in body weight |
|
|
|
|
|
|
| Yes |
−0.07 |
−0.2; 0.07 |
0.33 |
−2.05 |
−12.4; 8.3 |
0.7 |
| No |
0 |
---- |
---- |
0 |
--- |
---- |
|
Weight gain (per kg) |
−0.01 |
−0.05; 0.01 |
0.36 |
−0.03 |
−3.05; 2.9 |
0.9 |
|
Weight loss (per kg) |
−0.007 |
−0.03; 0.01 |
0,6 |
0.17 |
−1.5; 1.9 |
0.8 |
|
Sleep characteristics |
|
|
|
|
|
|
|
Shift- off sleep hour |
|
|
|
|
|
|
| ≤4 h |
−0.31 |
−0.8; 0.2 |
0.23 |
−14.3 |
−52.2; 23.6 |
0.46 |
| 4-6 h |
−0.12 |
−0.2; -0.005 |
0.04 |
−9.6 |
−18.4; -0.8 |
0.03 |
| >6 h |
0 |
---- |
---- |
0 |
---- |
---- |
|
Shift- on sleep hour |
|
|
|
|
|
|
| ≤4 h |
−0.1 |
−0.3; 0.1 |
0.32 |
−14.6 |
−29.7; 0.3 |
0.05 |
| 4-6 h |
−0.3 |
−0.6; -0.006 |
0.04 |
−13.5 |
−37.2; 10.1 |
0.26 |
| >6 h |
0 |
---- |
---- |
0 |
---- |
---- |
|
Self perceived sleepiness |
|
|
|
|
|
|
| No sleepiness |
0.1 |
−0.04; 0.31 |
0.14 |
10.5 |
−1.3; 22.3 |
0.08 |
| Excessive sleepiness |
0.0 3 |
−0.11; 0.19 |
0.63 |
7.08 |
−3.5; 17.6 |
0.18 |
| Severe sleepiness | 0 | ---- | ---- | 0 | ---- | ---- |
SD standard deviation, h hours, EQ5D Euroqol 5 dimension EQ index Euroqol index, EQ VAS Euroqolvisual analogic scale, Kg kilogramme, CI confidence interval. β: β coefficient from the multivariate lineal regression, after adjustment by all relevant variables. Positive values indicate better quality of life on that domain for that category; negative values indicate poorer quality of life compared with the reference category. 0 indicated reference.