Does "strength" here mean "power or ability (to do things that need a lot of physical or mental effort)"?

Vaccine effectiveness was estimated with a test-negative case–control study design, a preferred design for assessing vaccine effectiveness against influenza (see the Supplementary Appendix).2 A key strength of this design is the ability to control for bias that may result from differences in health care–seeking behavior between vaccinated and unvaccinated persons.

Source: New England Journal of Medicine

1 Answer 1


"Strength" refers to the strong attribute of the design, which is Sense 4a in Merriam-Webster Dictionary:

4b: a strong attribute or inherent asset
// the strengths and the weaknesses of the book are evident

(Merriam-Webster Dictionary, n. d.)

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