Page 37 - Portuguese Journal - SPORL - Vol 61. Nº1

position, were younger, had a lower BMI, ODI, disease than patients with NP-OSAS. The
and AHI. However, on using a binomial logistic
regression model, we observed that the most
significant predictors of P-OSAS were BMI,
ODI, and supine position time. Thus, as the
BMI and ODI increase, the probability of the
patient presenting with P-OSAS decreases.
Conversely, when the supine position time
increases, the likelihood that the patient will
have P-OSAS also increases.
With regard to eP-OSAS, we observed that
patients in this group slept longer in the supine
position, were younger, and had a lower BMI,
AHI, ODI, MDD, and duration of snoring, which
indicate the lower severity of these cases.
Applying the same principle as for P-OSAS,
using a binomial logistic regression model,
we found that the most significant predictors
of eP-OSAS were ODI and time in the supine
position. Thus, the probability of an eP-OSAS
diagnosis decreases with increasing ODI and
conversely increases with increasing time in
the supine position.
Contrary to some studies in the literature, the
predominance of male patients in the P-OSAS
and eP-OSAS groups was not statistically
significant in the present study . We think
12
that this difference may be related to the
predominance of male patients in the initial
sample. One of the limitations of this study was
the use of PSG type 3 in an outpatient setting
instead of PSG type 1 in a sleep laboratory, as
only with the latter it is possible to monitor the
patient's sleep stages. Additionally, the video
feedback allows the correction of the position
of the equipment on the patient. Another
limitation was the fact that PSG was performed
for only one night per patient, which may not
account for the intra-individual variability of
OSAS patients .
13
To our knowledge, this is the first study of its
kind conducted in the Portuguese population.
Conclusion
Our results suggest that P-OSAS is relatively
frequent in patients with OSAS. Patients
with P-OSAS tend to be younger, less obese,
and have less severe presentations of the
identification of patients with P-OSAS and eP-
OSAS, with the latter corresponding to about
1/3 of the former, is extremely important given
the potential for improvement or resolution of
the disease with the use of positioners.
Conflicts of Interest
The authors declare that there is no conflict
of interests regarding the publication of this
paper.
Data Confidentiality
The authors declare having followed the
protocols in use at their working center
regarding patients’ data publication.
Protection of humans and animals
The authors declare that the procedures
were followed according to the regulations
established by the Clinical Research and Ethics
Committee and to the 2013 Helsinki Declaration
of the World Medical Association.
Funding Sources
This work did not receive any contribution,
funding or scholarship.
Availability of scientific data
There are no datasets available, publicly related
to this work.
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