The phrase "ascertained even when" is correct and usable in written English.
It can be used in contexts where you want to emphasize that something can be determined or confirmed regardless of certain conditions or circumstances.
Example: "The results can be ascertained even when the data is incomplete."
Alternatives: "determined even when" or "verified even when".
Again, the 'standard' interpretations were originally united in perceiving a clear break between the two distinct stages of Wittgenstein's thought, even when ascertaining some developmental continuity between them.
Other issues of how inaccurate ascertainment of gestational age may introduce bias in exposure birth outcome studies, even when using ultrasound to ascertain gestational age, have been discussed in the literature (Slama et al. 2008b).
Parliament must also support all the measures necessary to ascertain the truth, and be constantly, intensely vigilant even when all this has died down, for without transparent authorities and guaranteed individual rights, there can be no faith in democracy.
Still, all community based studies of reproductive health should explicitly ascertain and report the clinical presence or absence of fistula, even when the sample size is small.
Non-word repetition gave the best discrimination between the parent groups even when the data from the parents who actually were impaired as ascertained by direct testing or self-report were removed from the analyses.
Even when the documents are legitimate, arms manufacturers seldom try to ascertain whether their products end up in the country that issued the certificate.
Even when additional data sources are used, current surveillance does not fully ascertain the extent of workplace-related disease in the United States (Azaroff et al. 2002).
23 Even when the same case definition is applied across studies, different methods have been used to ascertain cases.
