The phrase "a study observed that" is correct and usable in written English.
It can be used when referring to findings or conclusions drawn from research or academic studies.
Example: "A study observed that regular exercise significantly improves mental health among participants."
Alternatives: "research found that" or "a study noted that".
In support of the disorder prediction from residue ∼400 670 in the Ebolaviruses a study observed that the amino acids 601 739 of the nucleoprotein were not required in the formation of the nucleocapsid or replication of a shortened genome; as residues 670+ are predicted to contain secondary structure it appears their function is unrelated to binding partner ligands (Fig. 2B) [3].
A study observed that silencing of ANRIL resulted in 8-fold increase of CDKN2B expression suggesting a negative regulation.
A study observed that 62.9% of the patients in Brazil presented a low level of treatment adherence despite claiming to be aware of the risk of disease [ 8].
Using the SCORE risk chart for low-risk regions to predict the 10-year risk of CVD death, a study observed that the model over-estimated the CVD mortality risk in women [ 49].
In 2007, a study observed that nearly 90% of OTFC prescriptions were off label, or not prescribed according to the FDA guidelines.[ 46] Off-label use may contribute to the fatalities that are observed with these products.
Using a case scenario method in which a developmental paediatrician considered a 2.5-year-old child as needing further follow-up, a study observed that one fifth of GPs responded that they would not initiate further assessment [ 27].
A recent study observed that a previous exposure to a LPAI virus can reduce the concentration and duration of viral shedding via oropharynx and prevent cloacal shedding in mallards infected with H5N1 HPAI virus [17].
A recent study observed that TpC* mutations (where a C preceded by a T is mutated) occur at a higher frequency in bladder, cervical and head-and-neck cancers [ 16].
A previous study observed that giving care to a parent was associated with poorer mental health, but giving care to an in-law was not [ 26].
On the other hand, a recent study observed that soccer was not associated to a significant side-to-side asymmetry in the mean CSA of RA muscle [13].
A Canadian study observed that the risk of collisions with a motor vehicle was increased by wearing fluorescent clothing but decreased by wearing white or coloured clothing.
