The phrase "as previously estimated" is correct and usable in written English.
It can be used when referring back to an earlier estimation or assessment that was made before the current discussion or analysis.
Example: "The project's completion date remains unchanged, as previously estimated, despite the recent delays."
Alternatives: "as earlier projected" or "as previously calculated".
A typical T rex put on 1,790kg a year during the teenage period of growth, twice as fast as previously estimated.
The region is also now estimated to have grown 0.1% in the second quarter rather than stagnating, as previously estimated.
[C5.] Costs of Federal Programs Raised Trustees for Medicare and Social Security will report next week that the two programs will eventually need more than twice as much money as previously estimated, experts who helped prepare the calculations say.
The state trash authority lost close to $213 million, not $220 million as previously estimated, in its failed deal with the Enron Corporation, according to Attorney General Richard Blumenthal.
US economic growth slowed in the fourth quarter, but not as sharply as previously estimated, with fairly strong consumer spending offsetting the drag from businesses trying to cut stock levels.
Scientists from the World Agroforestry Centre, Royal Botanic Garden Edinburgh, and elsewhere found that agricultural land can hold four times as much carbon as previously estimated by the Intergovernmental Panel on Climate Change.
Dr. Peter Jablonka, a Tübingen archaeologist in charge of the lower-city excavations, said the remains of the extended city reached as far out as the ditch, making the city at least 10 times as large as its previously estimated area.
The government on Thursday said that third-quarter economic growth had not been as brisk as it previously estimated, because of a drop in consumer spending on services like health care.
Almost 1,200 aboriginal women have gone missing or been murdered since 1952, which is twice as many as advocacy groups had previously estimated, as the RCMP confirmed earlier this month.
However, if a similar filling percentage can be assumed as the one previously estimated, a correction factor of slightly larger than 2 should be included.
In its third week, Precious, as studios had previously estimated, placed sixth at the box office, with the revenues estimated $11,008,000an 87.4% increase from the previous week.
