I'll answer the question.
Not every study produces a report and not every report is necessarily the product of a study. Let me explain.
If, for example, a witness made false statements, the committee could decide to report that incident to the House, not necessarily as a result of a study. A report includes any communication from the committee to the House.
Generally speaking, when a study is completed, given the time and energy invested in it, a report is produced and tabled in the House, with recommendations sometimes. Usually, there are recommendations and a government response is requested, but that's not always the case.