'reviewed above' is correct and usable in written English.
You can use it to refer back to something earlier in your writing. For example, "The advantages and disadvantages of this approach were reviewed above."
The distinctions reviewed above have been explored extensively in contemporary philosophy.
The upshot was that all paid the bill in advance, and stalked off huffily to the Whitworth Gallery, where Mr Hockney had an exhibition opening yesterday (reviewed above).
The algorithms reviewed above are all range-based algorithms.
The methodologies reviewed above have hardly been applied to vulnerable road users.
Conclude with a discussion of current research results (reviewed above) that relate to these hypotheses.
The results of the online literature reviewed above clearly show this is not the case (Collins 2017; Mader 2014).
The findings reviewed above indicate that this view is mistaken.
In contrast, the buffering system reviewed above is general.
Evidence supporting aerosol transmission, reviewed above, appears compelling.
In several of the studies reviewed above, there is a potential problem of multiple comparisons.
In the studies reviewed above, different tasks were employed in the different studies.
