The phrase "as an additional indicator" is correct and usable in written English.
You can use it when you want to introduce another piece of information that supports or complements the main point being discussed.
Example: "The survey results were promising; as an additional indicator, the feedback from focus groups was overwhelmingly positive."
Alternatives: "as a supplementary measure" or "as a further sign".
In addition, the green fluorescent protein (GFP) was used as an additional indicator for success of transfection.
The mCIA results were compared with the silt-clay-ratio as an additional indicator for post-depositional soil forming processes.
Measures of N cycling genes could be used as an additional indicator of soil health to assess potential ecosystem functions.
Akaike's Information Criterion AICC) was used as an additional indicator of comparative model fit.
We also use the calendar with students' deadlines, which is provided by the StudentLife dataset, as an additional indicator of students workload.
The roughness of galvanic coatings is the result of the alloy deposition and may serve as an additional indicator of the surface development as well as topography [18].
The researcher must decide whether a stronger research contribution would arise from using an additional indicator as a redundant multiple indicator of some currently-modeled latent, or by using that additional indicator to control for some causal mechanism currently omitted from the model.
The addition of timeliness of vaccine uptake as an additional performance indicator has been recommended.
Changes in stiffness are frequently used as an additional damage indicator in fatigue tests of complex structures.
Stiffness has been introduced into this study as an additional damage indicator; furthermore, a high stiffness of the lateral side of the bone-implant construct suggests a stable lateral cortical hinge.
Since RC and drug resistance are highly correlated, and since the minor effect of RC on clinical response pales in comparison to the dominant role of resistance, there seems to be little benefit in considering RC as an additional therapeutic indicator.
