Raw data of serum mercury, selenium levels and allergic rhinitis (AR) among 831 participants

This dataset contains raw data from 831 participants, including: 1) Serum mercury (serum_Hg) and selenium (serum_Se) concentration levels; 2) Allergic Rhinitis (AR) diagnosis results (in line with ARIA guidelines); 3) Confounding variables (e.g., gender, age, lifestyle indicators). A matched data dictionary (recording variable definitions and coding rules) is attached in this upload. This data is used to support the epidemiological analysis of the association between serum Hg/Se levels and AR.