The phrase "are the first data" is not correct in standard written English.
It can be used when discussing the initial set of data in a specific context, but it requires additional context to be clear.
Example: "The results of the experiment indicate that the findings are the first data collected on this subject."
Alternatives: "represent the initial data" or "constitute the primary data".
The preliminary findings announced today are the first data reported from these assessments.
These are the first data of condensation in a similar geometry presented in the open literature.
Taken together, these are the first data showing decomposed processing of three-digit numbers in children.
The results on F. hepatica prevalence in snail hosts are the first data from Poland since the 1950s and the only such data based on molecular methods.
These are the first data to demonstrate that modulation of axonal transmission with externally applied electrical noise improves perception of tactile stimuli in humans.
Although replication is required, these are the first data to suggest that outcomes for children with autism may be affected by their siblings' psychological adjustment.
Mission principal investigator Alan Stern says that, after years of remote measurements showing a growing atmosphere, these are the first data that indicate it could be heading for a collapse.
Our results are the first data of genotoxic effects induced by coal mining exposure in Colombia, and thus, contribute to the exploration of test batteries use for monitoring of exposed populations and may stimulate designing control, hygiene and prevention strategies for occupational health risk assessment in developing countries.
The results are the first data showing that ABT-737 combined with resveratrol markedly decreased the cell viability, increased DNA damage, caused the cell cycle perturbation, and synergistically enhanced apoptosis in MOLT-4 cells, when compared to the data obtained after application of the single agent.
Previous work by Imbach and his colleagues showed that sleep problems could last as long as six months after brain injury, but these are the first data that compared patients' sleep a year and a half down the road with sleep patterns in healthy individuals.
These are the first data examining functional connectivity in a disrupted neural system during recovery.
