Sentence examples for frequent missing data from inspiring English sources

However, economic measures in RCTs are often outcomes of secondary interest and associated with frequent missing data and inadequate sample size.

Unfortunately, the original goal to use the pregnancy rate per cycle as the fertility measure was not possible because of frequent missing data.

For haematopoietic tumours, frequent missing data on time to diagnosis prevented the performance of secondary analyses; only the primary end point was considered.

Note that even though the spatial precision for the second group was relatively high, it was still data coming from infants, and thus, there was a high degree of head motion and frequent missing data points.

Once again, it is important to bear in mind that these are data from infants and, thus, still present a high degree of movement, variability in the levels of noise across the experiment, and frequent missing data points, even in the high-precision group.

The most widely used tool, the Charlson Comorbidity Index (CCI) is limited due to frequent missing data in medical records and administrative data.

Respiratory rate and oxygen saturations were the most frequent missed data.

A challenge to analyzing non-targeted output is the frequent occurrence of missing data (Hrydziuszko and Viant, 2012).

In the validation sample, presence of missing data is frequent.

Often the same individuals are observed repeatedly, but surveys are less frequent than cohort studies and missing data on individuals is much more common than in the cohort studies (there is no active follow-up of individuals).

On the other hand, the presence of missing data is a frequent problem, especially in retrospective and observational studies.