The phrase "as demonstrated by a decrease" is correct and usable in written English.
It can be used when you want to indicate that a decrease serves as evidence or proof of a particular point or argument.
Example: "The effectiveness of the new policy is evident, as demonstrated by a decrease in response times."
Alternatives: "as shown by a reduction" or "as evidenced by a decline".
In the healthy subjects, elevated [K+]o causes an increase of K+ current over the membrane, as demonstrated by a decrease in superexcitability [24, 25].
Fluticasone propionate suppressed cortisol secretion as demonstrated by a decrease in plasma cortisol AUC0 24, relative to placebo, by 29%9595% CI 15 41) and 59%9595% CI 51 66) with 440 and 880 μg b.i.d., respectively.
R306465 also inhibited angiogenesis as demonstrated by a decrease of microvessel growth in the rat aortic ring assay.
Compared with the MINI Suicidal Scale, the applied multifaceted bio-psychosocial screening method exhibited increased specificity, as demonstrated by a decrease in NNA values from 3.3 to 1.6.
SPARX was found to be effective but not superior to TAU, as demonstrated by a decrease in depressive symptoms by 30%% on a children's depression rating scale.
IVIg can also inhibit endothelial cell activation as demonstrated by a decrease in markers such as adhesion molecules, endothelins, pro-inflammatory cytokines (for example, IL-6) and inducible nitric oxide pathways [ 80, 81].
Patients displayed immunosuppressive phenotype, as demonstrated by a decreased mHLA-DR expression and profound CD4+ lymphopenia (Table 1).
PD173074 treatment in vivo was associated with cell cycle arrest as demonstrated by a decreased Ki-67 staining, but there was no evidence of apoptosis.
Endothelial dysfunction was present in RA as demonstrated by a decreased SAE of 3.9 (range 1.4 to 12.2) in patients vs. 6.1 (range 1.7 to 12.9) ml/mmHg in HC.
ATF-IO selectively accumulated in tumours on in vivo studies as demonstrated by a reduction in T2 values and signal decrease in T2 weighted images in various areas of the tumour mass.
Further, birch pollen induced lung inflammation could be ameliorated significantly by BM4 treatment as demonstrated by a reduction of airway hyperresponsiveness and drastically decreased eosinophil counts in bronchoalveolar lavage fluids.
