The phrase "also indicated that many" is correct and usable in written English.
It can be used when referring to previous statements or findings that suggest a significant number of something.
Example: "The research also indicated that many participants preferred the new method over the traditional one."
Alternatives: "also suggested that numerous" or "also pointed out that many".
The government also indicated that many consumers were holding back.
That same research also indicated that many children were now watching shows on screens other than televisions.
Some reports also indicated that many died from smoke inhalation because the doors were locked to prevent customers from leaving without paying.
The research also indicated that many inactive genes in zebrafish and ES cells carried "monovalent" chromatin marks; i.e. active, but not repressive, chromatin modifications.
Surveys in 2009 by the Employee Benefit Research Institute and Janus also indicated that many people who own target-date funds lack a clear understanding of how they work.
The endorsements, he added, also indicated that many in the party were now looking beyond the two best-known candidates in the race: Andrew M. Cuomo, the former federal housing secretary, and Mark Green, the former New York City public advocate.
Results also indicate that many students have serious difficulties performing this task in a systematic manner.
Exit polls also indicate that many voters (some 62%) see the troubled economy as the main election issue.
"These write-offs also indicate that many banks are still experiencing deep losses and are still in serious trouble".
While this is good in theory, might it also indicate that many South African growers don't take chenin blanc very seriously?
However, the significant sequence differences of CBDs also indicate that many types of CBDs have evolved independently and that their common feature is their ability to bind crystalline and/or amorphous forms of cellulose.
