The phrase "as a complementary method" is correct and usable in written English.
It can be used when discussing an additional approach or technique that enhances or supports a primary method in a particular context.
Example: "In our research, we employed qualitative analysis as a complementary method to the quantitative data we collected."
Alternatives: "as an additional approach" or "as a supportive technique".
For fine-tuning of the PI controller, D-stability concept as a complementary method is used.
We also used the trim and fill procedure30 as a complementary method to adjust for potential publication bias or small study effects.
It is shown that cross-sectional indentation can be used as a complementary method to assess coatings.
Recently viscoelastic measurement has received considerable attention as a complementary method to estimate the crystallization dynamics under shear.
ReHo can consider as a complementary method to model-driven method, and it could help reveal the complexity of the human brain function.
Exergy transfer analysis is proposed as a complementary method for analyzing and better understanding of the efficiency of microwave heating systems, which play a key role in medicine, chemical engineering, food industry and material processing.
As a complementary method for antiradical activity, the superoxide anion radical scavenging test was applied.
It would also be useful to conduct a rigorous analysis using Delphi as a complementary method in business ethics research.
However, sometimes researchers also implemented the interactionist approach as a complementary method in C-DA so as to better diagnose learners' abilities (e.g., Tzuriel and Shamir 2002).
Our paper has also demonstrated the added value of conducting stakeholder analysis as a complementary method to the use of MLP, notably as a way that agency can be explored.
We note that our semi-supervised approach can also be used as a complementary method to procedures such as those described in [23] as we can significantly expand the training set for use with supervised learning.
