The phrase "a proper indication of" is correct and usable in written English.
It can be used when discussing something that serves as a suitable or appropriate sign or signal of a particular condition or situation.
Example: "The increase in sales is a proper indication of the effectiveness of our new marketing strategy."
Alternatives: "an accurate reflection of" or "a valid sign of".
We have designed a cluster randomized controlled clinical trial to assess the (cost-) effectiveness of an antidepressant cessation advice in the absence of a proper indication for maintenance treatment with antidepressants in primary care.
Inappropriate use of antidepressants (AD), defined as either continuation in the absence of a proper indication or continuation despite the lack of therapeutic efficacy, applies to approximately half of all long term AD users.
In case of overtreatment, defined as the absence of a proper indication according to current guidelines, a cessation advice is given to the general practitioner.
Even in the case of a proper indication and precise surgical technique, results are sometimes unsatisfactory.
I just read your TechCrunch blog, "How Many Silicon Valley Startup Executives Are Hopped Up On Provigil?" in which you talk about the use PROVIGIL to gain a competitive edge, and wanted to clarify the proper indication of PROVIGIL.
Armenians welcomed Hakobyan with warmth, but without proper indication of her excellency from the hosting city, without fanfare of national anthems, flags' presentations or flowers.
Thus, the valid and accurate differentiation of follow-up lesions becomes increasingly important for the proper indication of subsequent management, especially in countries with regulatory approval of bevacizumab for salvage treatment [ 9].
The Washington Post read the Reuters piece as an indication the NSA is leaking phone record information to the DEA, through the SOD, but we're not convinced that it's a proper reading of the source.
