Mothers were concerned about baby's hearing and the attitude was positive. However, the correct recognition rate towards some risk factors for HL was low. Action needs to be taken to raise awareness about ear and hearing care, prevent HL caused by preventable causes and prompt early identification, early diagnosis and intervention of HL.

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Background Dyslipidaemia and cognitive impairment are common in old adults and risks of both of them increase with increasing age. However, the relationship between lipids and cognitive impairment in longevous people is still unclear. This study aimed to assess the association between serum lipids and cognitive impairment in Chinese centenarians. Methods In a cross-sectional study, total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C) were biochemically measured in 924 centenarians and cognitive functions were evaluated. Multiple logistic regression analysis was used to examine the associations of lipids with cognitive impairment and the risks for cognitive impairment associated with quartile of serum lipid concentrations. Results The results demonstrated HDL-C was an independent beneficial factor for cognitive impairment after controlling for the potential covariates (Odds ratio, OR = 0.350, 95% Confidence interval, CI = 0.159–0.774; P = 0.009). An inverse association of HDL-C with cognitive impairment was found (P for trend = 0.001) and the association remained significant after adjusting for possible cofounders (P for trend = 0.012). The OR of cognitive impairment for the lowest versus highest quartiles of HDL-C was 1.96 (95%CI, 1.09–3.45). Conclusions The results indicated that low HDL-C is likely to be harmful for cognitive functions in centenarians. The cognitive function of longevous persons with low HDL-C concentrations deserves more attention.