AIP and hypertensive disorder: In subgroup aged less than 65 years, AIP in Q4 was significantly associated with prehypertension (OR = 1.45, 95%CI:1.27–1.65, P < 0.001) and hypertension (OR = 1.82, 95%CI: 1.38–2.40, P < 0.001), but no such correlation was found in people aged over 65 years (P > 0.05) (Table S1).