The phrase "and the first study" is correct and usable in written English.
It can be used when referring to a specific study that is the initial one in a series or context.
Example: "The results of the second experiment were compared to those of the first study to assess the overall impact."
Alternatives: "along with the initial study" or "as well as the first research".
Charbonneau was recognized for a long list of firsts, including the first observation of a transiting exoplanet and the first study of an exoplanet's atmosphere.
Yang's study was composed of two studies and the first study did not show statistical difference, despite of a large amount of MSG, i.e. 5 g (2.5 %), ingested.
Although the higher results are not always by a significant margin over TPD and BKD, it is consistent across our data sets and, to some extent, theoretically justifiable from previous work, but it is the first study of its kind on publicly available data and the first study to compare methods using bias-corrected similarity.
The first round in 2011 was major news across the country and the first study that compared physician burnout rates to those of non-physician workers.
To our knowledge, this is the first description of the physiological properties of cholinergic and non-cholinergic neurons in the posterior aspects of the basal forebrain complex and the first study of basal forebrain neurons from the mouse.
To our knowledge, this is the largest study to specifically examine the hypothesis that NSAIDs may reduce the risk of prostate cancer, and the first study in the field to systematically examine the effects of five different classes of NSAIDs on prostate cancer risk, rather than just examine the effects of all NSAIDs or one NSAID.
A pilot test was conducted in 2007, and the first study wave was conducted in 2008.
The main study started in September 2011 and the first study patients were included.
Overall, the safety and tolerability profile was consistent with that reported previously in phase 3 studies and the FIRST study.
It is the first international study of its kind, and the first study to look at relative influences of multiple well described factors on psychiatric recruitment.
This represents the first study of TIF collected in situ and the first study of TIF obtained from head and neck squamous cell carcinoma (HNSCC).
