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Truckers Drive Their Own Assessment for Obstructive Sleep Apnea: A Collaborative Approach to Online Self-Assessment for Obstructive Sleep Apnea: Difference between revisions

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=== 4.1. Obesity and Hypertension ===
=== 4.1. Obesity and Hypertension ===
<center>[[File:JSCM-Figure1.png]]<br />
'''Figure 1. Histogram of Body Mass Indices of 595 Self-Selected Commercial Drivers'''</center>


More than two-thirds of the respondents were obese; 69.6% had a BMI > 30 kg/m<sup>2</sup>, and 47.6% had a BMI > 33 kg/m<sup>2</sup>. 35.6% of CMVDs surveyed had a BMI > 35 kg/m<sup>2</sup>. Figure 1 presents a frequency histogram of BMIs of the respondents. Obesity correlated with snoring loudness (the louder the snoring, the greater likelihood of obesity) (p<0.05) and with hypertension (p<0.05). More than a third (39.5%) of participants reported hypertension, which correlated with feeling tired/fatigued after sleep (p<0.05)
More than two-thirds of the respondents were obese; 69.6% had a BMI > 30 kg/m<sup>2</sup>, and 47.6% had a BMI > 33 kg/m<sup>2</sup>. 35.6% of CMVDs surveyed had a BMI > 35 kg/m<sup>2</sup>. Figure 1 presents a frequency histogram of BMIs of the respondents. Obesity correlated with snoring loudness (the louder the snoring, the greater likelihood of obesity) (p<0.05) and with hypertension (p<0.05). More than a third (39.5%) of participants reported hypertension, which correlated with feeling tired/fatigued after sleep (p<0.05)


=== 4.2. Sleepy Driving ===
=== 4.2. Sleepy Driving ===
With regard to drowsy driving, 20.5% answered positively to the Berlin Questionnaire query about falling asleep while driving. Correlates of sleepy driving are reported in Table 2. Sleepy driving was not associated with BMI, hypertension (p=0.07) or gender, but strongly correlated with severity and frequency of snoring and with witnessed apneas.  
{| class="wikitable" style="text-align: left; width: 100%;"
|+ Table 2. Correlates of drowsy driving and witnessed apnea
! Question
! colspan=2 | Significance (i.e. p-value)&#42;
|-
| &nbsp;
| '''Drowsy Driving'''
| '''Witnessed Apneas&ordf;'''
|-
| ''Overall Berin Score''
| < 0.0001
| < 0.0001
|-
| Do you snore?
| < 0.01
| < 0.001&deg;
|-
| How loud is your snoring?
| < 0.0001
| < 0.0001
|-
| Does your snoring bother other people?
| < 0.01
| < 0.01
|-
| How often do you snore?
| < 0.0001
| < 0.0001
|-
| How often has someone noticed that you quit breathing during your sleep?
| < 0.0001
| n/a&dagger;
|-
| How often do you feel tired or fatigued after your sleep?
| < 0.0001
| < 0.0001
|-
| During your waking time, how often do you feel fatigued, or not up to par?
| < 0.0001
| < 0.0001
|-
| style="font-size: 8pt" colspan=3| &dagger;This value has been omitted since the test described here would be correlating the variable with itself.
&deg;Respondents who answered "yes" had the stated p-value, respondents who answered "I don't know" were weakly correlated with p=0.10478
 
&#42;The significance value is taken from a univariate logistic regression model with the questions as univariate independent variables and the two responses as the dependent variables.
 
&ordf;This variable was transformed such that "Nearly every day" and "3-4 times/week" were a positive response and every other
response was a negative response.
|}
 
 
With regard to drowsy driving, 20.5% answered positively to the Berlin Questionnaire query about falling asleep while driving. Correlates of sleepy driving are reported in Table 2. Sleepy driving was not associated with BMI, hypertension (p=0.07) or gender, but strongly correlated with severity and frequency of snoring and with witnessed apneas.


=== 4.3. Witnessed Apneas ===
=== 4.3. Witnessed Apneas ===
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Med. 2009;51(10):1220-6.  
Med. 2009;51(10):1220-6.  
: <sup>[19]</sup> Stevens, S.S. On the Theory of Scales of Measurement, Science 1946;103 :677-80.
: <sup>[19]</sup> Stevens, S.S. On the Theory of Scales of Measurement, Science 1946;103 :677-80.
[[Category:Journal Papers]]
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