Before inverse probability of treatment weighting (IPTW) was applied, the statin and combination groups—compared with the fibrate and non-user groups—were generally younger and had more OPD visits; a higher prevalence of hypertension and diabetes mellitus; and higher proportions of patients using certain medications, namely angiotensin-converting enzyme inhibitors/angiotensin receptor blockers, dihydropyridine calcium channel blockers, loop diuretics, oral hypoglycemic agents, insulin, and antiplatelets. This evidence concerns the gene INS and diabetes mellitus.