I would also agree with David. I have used the approach to thematic analysis proposed by Braun and Clarke (2006) and find it helpful and straight forward:
Phase 1: familiarising yourself with your data
Phase 2: generating initial codes
Phase 3: searching for themes
Phase 4: reviewing themes
Phase 5: defining and naming themes
Phase 6: producing the report
Link to the paper where each phase is explained in detail: Article Using thematic analysis in psychology
Qualitative data in a semi-structured interview can be analyzed using open, axial, and selective coding.
Usually, in the qualitative research method, we must continue the interviews to a point where the new factor is not added to the previous factors, and so the research will be saturated. For example, you might see that in the fifteenth and sixteenth interviews a new factor has not been added to previous factors; or you have to do 20 interviews or more.Therefore, it seems that in qualitative research, the exact number of samples can not be determined.
Analyze the data using inductive processes such as those proposed by Corbin and Strauss. I would also consult with Sharan B Merriam books as she is very clear. As for sample size, there is no standard on this issue
There are good (I wont say 'great') software programs that you can buy/borrow/download, that can do this for you. Most of them are word-search and compare/contrast algorithm based. They saved me a LOT of time in my PhD dissertation!
I would also agree with David. I have used the approach to thematic analysis proposed by Braun and Clarke (2006) and find it helpful and straight forward:
Phase 1: familiarising yourself with your data
Phase 2: generating initial codes
Phase 3: searching for themes
Phase 4: reviewing themes
Phase 5: defining and naming themes
Phase 6: producing the report
Link to the paper where each phase is explained in detail: Article Using thematic analysis in psychology
I'm afraid you may not like my response. The whole import of quantitative information is to provide a rich context within which to examine and analyze the meanings articulated by a subject, or by subjects, and then to tease out the motivations behind these statements. Treating such material early either synoptically or quantitatively will lose much of the texture and individuality of the responses. The synopsis can emerge later assisted by a separate quantitative approach that can either support or call into question the qualitative findings. Yes, this is more work, but the robustness of the findings are usually worth it.