Comparing Descriptive Statistics for Retrospective Studies From One-per-Minute and One-per-Second Data
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Updated: Sep 21, 2025

A Two-interval Forced-choice Task for Multisensory Comparisons
Published on: November 9, 2018
Hylke H Salverda1, Janneke Dekker1, Ruben S G M Witlox1
1Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, Netherlands.
Background:
Large amounts of data are collected in neonatal intensive care units, which could be used for research. It is unclear whether these data, usually sampled at a lower frequency, are sufficient for retrospective studies. We investigated what to expect when using one-per-minute data for descriptive statistics.
Methods:
One-per-second inspiratory oxygen and saturation were processed to one-per-minute data and compared, on average, standard deviation, target range time, hypoxia, days of supplemental oxygen, and missing signal.
Results:
Outcomes calculated from data recordings (one-per-minute = 92, one-per-second = 92) showed very little to no difference. Sub analyses of recordings under 100 and 200 h showed no difference.
Conclusion:
In our study, descriptive statistics of one-per-minute data were comparable to one-per-second and could be used for retrospective analyses. Comparable routinely collected one-per-minute data could be used to develop algorithms or find associations, retrospectively.
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