Furthermore, after censoring cases who died from non-pneumonia causes and adjusting for age, monthly income, and CCI score, PC patients who received treatment with GnRH agonists were more likely to have been hospitalized for the treatment of pneumonia during the 1-year follow-up period than PC patients who did not receive treatment with GnRH agonists (HR: 1.92, 95% CI: 1.10∼3.36). This evidence concerns the gene GNRH1 and susceptibility to pneumonia measurement.