Sentence examples for missing observations was from inspiring English sources

Our analysis was based on compete case analysis as no imputation of missing observations was carried out.

Imputation for missing observations was applied to efficacy endpoints evaluated at or before week 52 using the last observation carried forward (LOCF) method.

However, owing to the moderate amounts of missing data in the cohort, primarily for occupation and occupational activity (both missing 6.3% of values), multiple imputation of missing observations was performed to evaluate whether complete-case analyses introduced bias.

The average pain score upon movement, following imputation of missing observations, was 2.2 (CI: 1.5 3.0) in the femoral block group and 2.1 (CI: 1.5 2.8) in the LIA group.

Farm-level predictor variables from the PND were selected for inclusion in the statistical analysis if they were available from the GBPR, and if the proportion of missing observations was not >50% (Table 3).

Listwise deletion of the missing observations was performed and a complete-case analysis was undertaken.

For the LVCF method, missing observations were replaced with the last observed value carried forward for reasons other than death or zero value carried forward at death.

Furthermore, in longitudinal panel data, missing observations are a growing problem also with nonparametric methods when cumulative outcome measures are used.

In several current large-scale assessment programs (Allen et al. [2001]; Foy et al. [2008]; OECD [2009]) missing observations were dummy coded and the dummy variables were subsequently used in the population model.

The general perception is that, to achieve a fixed significance level and power, a group sequential test will require a larger maximum total sample size than required by the corresponding standard single-stage test because missing observations are possible under the group sequential test setting.

In both cases, missing observations were excluded from the model.