The phrase "asked to compare how" is correct and usable in written English.
It can be used when requesting someone to evaluate or analyze the differences or similarities between two or more subjects or ideas.
Example: "In the study, participants were asked to compare how different teaching methods impacted student engagement."
Alternatives: "requested to evaluate how" or "instructed to assess how".
To measure overall response to ecallantide or placebo, patients were asked to compare how they were feeling following treatment to how they were feeling before treatment.
"It's pretty close," Woods said, when asked to compare how he felt today, to the way he felt in 2000.
After Tuesday's practice, Toews was measured when discussing his health, but cracked a smile when asked to compare how he felt now compared with a few weeks ago.
Asked to compare how Enron or Dynegy book revenue with other businesses, most analysts say Enron was a trading business and that revenue was not important.
To help this lesson sink in, ask students to compare how it felt to receive a gift that embodied a lot of thought and effort vs. one that didn't.
Then Belafonte challenged Sullivan, asking the Irish American host to compare how the Irish rebellion against the British was considered "an act of nobility," whereas the reaction to black Americans and "our resistance to the tyranny we've experienced" was quite different.
Asked to describe how he would compare himself with his fiery predecessor, Charles van Commenee, the Swede made his position crystal clear.
Participants were then asked to consider how the survey responses compared with their own responses and to consider the reasons for their responses and any possible variance from the response pattern from the Phase 1 survey.
A group of surgeons asked to publish information about how they compare with each other is likely to find that the analysis they can all support is the one that shows no differences between them.
When it came time to choose among offers, he pushed her to compare by asking how each one stacked up against her first and eventually final choice, Wachtell, Lipton, Rosen & Katz.
At ME1 and ME2, the item asked: "Compared to one ear ago, how would you rate your health in general now?".
