By clinical record review, this retrospective study aims to compare the different age groups of patients with obstructive sleep apnea, who were diagnosed and treated in Taipei Veterans General Hospital, Taiwan.
This retrospective study aims to compare the characteristics of patients with obstructive sleep apnea (OSA). Patients with sleep problem and received a prior polysomnography at Taipei Veterans General Hospital during Jan. 1, 2016 to Dec. 31, 2017 will be enrolled. Obstructive sleep apnea (OSA) is defined by an apnea-hypopnea index(AHI) at least 5/hr with compatible symptoms. Their clinical record will be reviewed and data including demography, polysomnography, comorbidities and details related to upper airway structure will be collected. The charactereistics would be compared with Student's t tests, Mann-Whitney U tests, or Chi square tests if appropriated.
Study Type
OBSERVATIONAL
Enrollment
3,000
Chest department, Taipei Veteran General Hospital
Taipei, Taiwan
RECRUITINGApnea-hypopnea index(AHI)
Counts of apnea/hypopnea events per hour
Time frame: through study completion, an average of 1 year
Body mass index(BMI)
The body mass divided by the square of the body height.
Time frame: through study completion, an average of 1 year
Posterior airway space (PAS)
The diameter from supramentale to gonion.
Time frame: through study completion, an average of 1 year
Number of participants with comorbidities
Self-reported comorbidities including cardiovascular disease, stroke, hypertension, diabetes mellitus, hyperlipidemia, lung disease, anxiety, depression.
Time frame: through study completion, an average of 1 year
Sleep efficiency
The ratio of the total time spent asleep (total sleep time) in a night compared to the total amount of time spent in bed.
Time frame: through study completion, an average of 1 year
arousal index
The number of arousals and awakenings as a frequency per hour of sleep.
Time frame: through study completion, an average of 1 year
oxygen desaturation index
The number of times per hour of sleep that the blood's oxygen level drop by 4% from baseline.
Time frame: through study completion, an average of 1 year
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