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Table 3 Prevalence of OSA and sleepiness and their relationship with demographic and clinical variables

From: Assessment of the relationship between metabolic syndrome and obstructive sleep apnea in male drivers of Shahroud city in 2018: a cross sectional study

Variable Risk of OSA Chi-square test (χ2) P-value Sleepiness Chi-square test (χ2) P-value
Low(%) High(%) normal mild
Class of driver’s license Class 1 50.32 18.46 4.23 0.06 568 84 2.53 0.14
Class 2 0.24 6.12 249 32
Class 3 1.27 0.32 15 0
Driving type Passenger cars 18.67 5.49 0.772 0.18 194 35 2.611 0.05
Road vehicles 56.43 19.41 638 81
Marital status Married 70.04 24.26 5.818 0.01 782 112 1.243 0.13
Single 5.06 0.63 50 4
Age < 30 9.07 0.63 220.876 < 0.001 86 6 10.902 0.006
30–40 22.57 1.69 212 18
40–50 29.96 5.49 284 52
> 50 13.5 17.09 250 40
BMI < 18.5 2 0.11 161.142 < 0.001 17 3 4.023 0.12
18.5–25 31.22 1.58 271 40
25–30 30.59 10.86 339 54
> 30 11.29 12.34 205 19
HTN Yes 30.38 14.87 26.639 < 0.001 385 44 2.860 0.04
No 44.73 10.02 447 72
HDL < 40 62.24 19.51 2.38 0.06 676 99 1.144 0.14
≥40 12.87 5.38 156 17
TG ≥150 31.54 13.71 12.260 < 0.001 380 49 0.484 0.24
< 150 43.57 11.18 452 67
FBS ≥100 58.33 15.08 26.48 < 0.001 609 87 0.170 0.34
< 100 16.77 9.81 223 29