Title: Sleep pattern and disorders among pregnant women in Ibadan, Southwest Nigeria
Version: 2 Date: 21 Feb 2024
Reviewer:  Phuc Nhon Nguyen
Reviewer's report:
Dear authors,
Thank you for addressing the sleep disorder issue during pregnancy on women’s health. The
topic is interesting, however, a few queries needed to be clarified point-by-point:
-In method of abstract, please unified the number or word of figure, five or 5, ten or 10.
- Conclusion: In Ibadan, Nigeria (country must be added following the title), "Awareness "is
changed to "awareness", a typo error.
-In the last paragraph of Introduction, “Few studies have revealed that 35.5–44.1 is the
prevalence of sleep disorders reporting various disorders such as insomnia, obstructive
sleep apnea (1.2%), RLS (1.2%), mild sleepiness, excessive daytime sleepiness and specific
awakenings”. Please add the unit (percentage) to the 33.5-44.1.
-In method, date should be added to the period “between October and November 2021”.
- “AMTH is a state-owned hospital with a comprehensive obstetric care facility with health
infrastructure and personnel to manage obstetrics emergencies and general and maternal health
care services in Ibadan and its environs”.  This hospital’s information is too long, please shorten
it.
- The prevalence of 50% in the formula of sample size calculation should be clearer, the data
was used following which reference?
-The inclusion and exclusion criteria needed to be added.
-“SPSS version 17 and STATA version 13 SE” missed the year and country of the production.
-Multivariate analysis must be more clarified. How the variables were chosen, based on p of
univariate analysis less than 0.05? And which variables were included in multivariate analysis?.
-Statistical analysis needed to be more detailed.
-UOR should be replaced by cOR (crude OR) since UOR is rarely used.
-Some qualitative variable is difficult to determine such as pre-pregnancy smoking, second-
hand smoking, alcohol consumption, and physical activities. For example: if the woman used
infrequent consumption or daily use. The effect is not the same.  Thus, the definition of the
variables is strongly recommended.
-Income in naira is calculated for only pregnant woman or earned by the couple including income
of her partner/husband.
-Body mass index and obesity vs normal BMI should be added since it affects to sleep disorders
also. Obese woman increases the rate of sleep disorders.
-In overall the manuscript, the authors used “for example”, this word should be limited in the
research paper.
- In conclusion: “Sleep is essential to human wellbeing, especially for the mother and baby
during pregnancy.”, this sentence is unnecessary and must be deleted. The conclusion must be
detailed and supports the findings only.
-English editing is required.
- The major issue, this study did not concern about the accompanying diseases of the pregnant
women such as hypertension, diabetes, preeclampsia, previously mental disorders, systemic
lupus erythematosus, and asthma. This could lead to sleep disorders. Moreover, some issues
related to pregnancy such as hydramnios, multi-gestation could cause shortness of breath and
impact on sleep when the pregnant lay down on the bed in the night. Even, fetal abnormalities
could influence on the psychology of the pregnant woman. The pregnancy with a planned
cesarean section also making the pregnant woman feel worried.
Therefore, these limitations should be added seriously.
Best regards,
Phuc Nhon Nguyen MD
Tu Du Hospital, Ho Chi Minh City, Vietnam