Further, an alternative categorization scheme, which used only two extreme portions of the empirical distribution of mortality rates, was considered.
Therefore, SNP selection was also performed by an alternative categorization method based on using only two extreme portions of the entire sample of sire means.
For comparison, mean values of the prevalence of smoking with this categorization (I) and an alternative categorization (II), where the 3.6% male and 3.5% female intermittent smokers are included in the not smoking category, are shown for the period 1990 2007 in Table 1.
However, since this categorization still is somewhat arbitrary, sensitivity analyses were performed with an alternative categorization using cut-off 12 (corresponding to an exposure to two up to five of the individual items, reported by 27% of the sample), which revealed a similar pattern of results.
In an additional analysis we use PubMed IDs for an alternative categorization.
An alternative categorization scheme could focus on the state of the research with categories like no studies, isolated, infancy, emerging, and established.
Finally, when alternative categorization of covariates was used in multivariate models the results were virtually identical to those reported here (not shown).
We also used these Information Criteria to assess alternative categorizations of MCV coverage levels.
Variables in italics are alternative categorizations of selected variables and are adjusted for age and the other variables in the table.
In preliminary survival analyses we assessed alternative categorizations of RDI (i.e., <50%, 50%-70 50%-7084% and 85%+), then collapsed categories that did not differ significantly in terms of their association with either OS or DFS.
