There used to be a definite cut-off point in modelling but that's changing, and I hope the careers of other 40-plus models will start to take off.
The effect of maternal height on such cesarean rate seems to be continuous without definite cut-off point.
We suggest routine concomitant PCT and CRP assay with definite cut-off values as a new test to identify infection in patients undergoing VA ECMO.
Unfortunately, no definite cut-off values for perfect separation of synovitic from non-synovitic joints could be established in our pilot study.
A problem when constructing this typology, however, is that there are no definite cut-off points between "high" and "low" responsiveness and demandingness, and the ensuing classification may be arbitrary (Chan and Koo 2011; Wen and Hui 2012).
The two tropical breeds of Creole goats and Black-Belly ewes used in the present study demonstrated clear seasonal breeding activity with a definite cut-off when maintained under the simulated extensive photoperiodic variations of temperate areas.
Our pilot study demonstrates that a quantitative assessment of the fluorescence results obtained by FOI is feasible, although so far no definite cut-off value could be delineated that perfectly separates inflamed from non-inflamed joints in patients with RA.
Osteophytes were imaged at the hand, knees and hips; femoral head abnormality at the hips and synovial effusion at the knees, since these are ultrasound features of OA that have a definite cut-off to define presence or absence.
The respective AUC (0.72 and 0.71) were promising but the considerable overlap of data between the groups precluded calculation of a definite cut-off value to be recommended for use in individual patients.
Langhorne et al. [ 25] assessed depression by interviewing with questions "do you often feel sad or depressed?" and "do you often feel anxious or agitated?", while we used standardized questionnaire (HADS) with definite cut-off score.
As opposed to the dichotomised scoring method used in the original HDI study, we applied continuous scoring to reflect the fact that the health effect of various nutritional factors does not follow definite cut-off points, and to provide greater variation between individuals.
