Generalized estimated equations were used, with the Palaeolithic diet group as a reference group.
Finally, the categorized semen parameter variables were taken as dependent variables for logistic regression, with Mn as an independent variable and the 40 60% concentration group as a reference group, because Mn is a necessary trace element for humans [ 1- 3].
Analyses were conducted as independent sets of pairwise comparisons because the HM group was included as a reference group and was not a randomized group.
Third, to understand the characteristics of the groups, we explored associated factors for each, setting group A as a reference group.
dThis group was chosen as a reference group because it was one of the groups not chosen at random to be impacted by DIF.
We also performed direct comparisons using risk group 1 as a reference group in a Cox's model with adjustment for year of birth and age at medical evaluation.
In addition, the non-tq group served as a reference group.
Twenty patients with glucose levels <7 mmol/l (the NG group) served as a reference group.
The MSD group served as a reference group in the analysis, which was carried out in three steps.
As a result, when these elements are referred to as a group (such as a reference to an act or a title of an act) that reference will be relatively easy to carry over into the Code.
