Dat Q. Nguyen

Background: The popularity of wearable health monitoring devices, such as Fitbits, is on the rise. However, their applicability in various research demographics remains uncertain, particularly among postpartum women facing significant sleep challenges. Objective: This study aimed to evaluate the consistency between Fitbit Charge 6 and structured interview questions in measuring sleep quality among breastfeeding mothers. Methods: A cross-sectional study utilizing random convenience sampling was conducted in Ho Chi Minh City, Vietnam, involving 208 breastfeeding women one month postpartum. The participants used the Fitbit Charge 6 device continuously for four days and three nights to gather daily sleep information; then, they were administered a structured sleep questionnaire via home interviews. Results: The correlation between the total sleep time (TST) recorded by both the device and interview was weak (r = 0.28), as was the correlation for short nap duration (r = 0.25). The agreement between the Fitbit Sleep Score and sleep satisfaction from the questionnaire was 79.9%, with a notably low Kappa index (0.02), indicating a lack of strong agreement. Conclusion: The Fitbit Charge 6 did not show reliable correlation with the subjective sleep data reported by one-month postpartum breastfeeding women. Further research employing rigorous comparative studies is necessary to assess the validity and reliability of sleep data collection methods for this demographic.

Background/Objectives: To assess the correct sampling rates and self-collection satisfaction levels among female residents aged 25 to 64 years during first-time HPV testing in the communities of Ho Chi Minh City. Methods: An observational study was conducted on self-collection for HPV testing in communities from January to December 2024. The study employed a probability proportional to size sampling method, involving self-collected sampling and post-collection direct interviews. Results: The data show that 99.9% [95% CI = 0.99–1] of 775 women successfully collected their own samples during a first-time HPV testing process. The self-collection satisfaction rate was 80.4% [95% CI = 0.77–0.83]. Conclusions: Self-collected sampling for HPV testing has a very high success rate in communities. Moreover, women who feel confident in self-collection tend to have higher satisfaction rates with this new method. Therefore, self-collection sampling should be widely adopted for early cervical cancer screenings to test for high-risk HPV. It is essential to provide careful instructions and mobilization to encourage women’s confidence in performing self-collections.