Required reference: Ballering, Aranka V., et al. "Gender and sex independently associate with common somatic symptoms and lifetime prevalence of chronic disease." Social Science & Medicine 253 (2020): 112968.
It is important to note that the gender index is included in a separate data file called ‘sec_c_gender_results’. No reference is needed for the ‘basic’ gender variable included in (almost) all data files.
