I think your research is strong, but you could include more recent data.

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Your research is strong, but incorporating more recent data would strengthen it further.

While the research is well-executed, the inclusion of more current data is recommended.

I found your research compelling, however, I suggest adding more recent data for a comprehensive analysis.

The research is solid, but consider updating it with the latest data available.

Your research demonstrates strength; however, the inclusion of more contemporary data is advised.

Your research is good, but it could use some newer info.

Your research is okay, but add some newer data.

Research that is well-conducted and provides convincing evidence.

Information or statistics collected from a more recent time period.