Sentence examples for difficult to ascertain with from inspiring English sources
According to the People's Movement Against Nuclear Energy (PMANE), 302 women and 24 men are engaged in a "fast until death" hunger strike, but it remains difficult to ascertain with any degree of authority how many of these men and women are in fact supplementing their diet in some way for the preservation of health and safety and to what degree that might be the case.
The microstructural origin of this behavior is difficult to ascertain with macroscopic observations.
The composition of resulting Fe(III) oxide(s) has previously been difficult to ascertain with traditional methods of solid-phase analysis such as X-ray diffraction (XRD) or electron microscopy (Table 1).
Although our funnel meta-regression analysis showed a limited publication bias (Additional file 1: Fig. S2), the bias was always difficult to ascertain with a small sample number of the included studies.
Finally, with reference to Lepore et al.'s study, the exact point of clinical and radiographic fracture union is clearly difficult to ascertain with any reliability or reproducibility, particularly since patient follow-up was on a 2 monthly basis.
Whether 100 Days Action actually changed anyone's mind about politics is difficult to ascertain with any certainty, but Contreras attests that the project did succeed in galvanizing the will of those involved by helping to hone their ability to take care of themselves as they continue their resistance.
As a consequence, however, it may be increasingly difficult to ascertain individuals with RA in cross-sectional studies aiming to estimate disease occurrence or to verify RA in patients with established disease in clinical settings.
In addition, many variables (lupus activity, renal disease, low complement, treatment with steroids and immunosuppressive drugs) are intimately related with each other in clinical practice, and thus their relative weight and interactions are difficult to ascertain, even with multivariate analysis.
As the underlying aetiology may be difficult to ascertain in patients with oxygen-dependent pulmonary fibrosis, idiopathic pulmonary fibrosis was defined through review of national administrative register data and individual medical records.
Radiation toxicity can sometimes be very difficult to ascertain in patients with GBM for two reasons: the short median survival is probably not long enough for late radiotherapy toxicity to become apparent in many of these patients; and these tumors are associated with large areas of necrosis, which may be mistaken for radiotherapy damage on imaging studies.
This is difficult to ascertain among black subjects with HbA1c ≥ 6.5% (48 mmol/mol), whose HbA1c was 7.4 ± 1.5% (see Table 1 in Selvin et al. [ 1]).
