When less than the needed amount of athletes was available in a certain year for a certain distance, that year was excluded from analysis.
As each merger only has 5 data points, aligning them by stages of merger means that data for certain years contributed few mergers (for example, only 2 mergers at Year 4).
For some countries the mortality rates for certain years were missing in the WHO's HFA-DB.
Facebook said in the filing: "We believe that this seasonality in advertising spending affects our quarterly results, which generally reflect strong growth in advertising revenue between the third and fourth quarters and slower growth, and for certain years a decline, in advertising spending between the fourth and subsequent first quarters".
However, if rates were only reported for certain years combined [ 12– 15], these data were used.
In Yaoundé, data are missing for certain years and the trends are more varied.
Generally, better linkage was achieved with the Birth Registry than the Healthcare Registration File, except for certain years (60.8% vs. 75.6% in 1961; 64.4% vs. 73.2% in 1962; and 71.2% vs. 78.4% in 1965).
In a few cases, the external rates were not available for certain years and cancer types and hence were not included in the corresponding external analyses, which is why the total numbers are sometimes lower than those in the internal regression and do not sum to the total number of non-lung cancers.
In the past, long-term survival rates have mostly been calculated in a 'cohortwise' manner, that is, for cohorts of patients diagnosed in certain calendar years for whom long-term follow-up, such as 5-, 10-, or 20-year follow-up, has been completed in the meantime.
Backwards compatibility is generally not a strong motivator, with the most-dedicated preferring instead to own dozens of gaming machines and play the games of a certain year on the machines for which they were intended.
