marginal significanceP = 0.069
After adjusting for demographic characteristics (Model 2), the protective association remained robust for the upper-middle SES group (OR = 0.66, 95%CI: 0.54–0.81, P < 0.001), while the high SES group maintained a similar magnitude of protection albeit with marginal significance (OR = 0.41, 95%CI: 0.13–0.97, P = 0.069).