Association between meteorological factors and hospital admissions for uveitis in Hefei, China: a time-series study
2022
Cao, Fan | He, Yi-Sheng | Xiang, Kun | Wan, Cheng-Huan | Liu, Wei | Gui, Yan-Chao | Pan, Hai-Feng | Jiang, Zheng-Xuan | Tao, Li-Ming
Meteorological variables are regarded as risk factors for inflammatory diseases, but their associations with uveitis, one of the leading causes accounting for blindness worldwide with an estimated prevalence of 38–714 cases/100,000 person-years, have not been thoroughly investigated. The present study explored the short-term association between meteorological variables and hospital admissions for uveitis in Hefei City, China. Daily data on uveitis hospital admissions and meteorological variables including mean temperature (MT) (°C), diurnal temperature range (DTR) (°C), and relative humidity (RH) (%), from 2014 to 2020, were collected. A time-series study using generalized linear model combined with distributed lag non-linear model was applied. Totally, 1911 admissions for uveitis including 894 first admissions and 1017 readmissions were reported during the study period. The associations of high percentile of MT (75th, 24.5℃) and low percentile of DTR (25th, 5.4℃) with uveitis admissions were observed to be statistically significant from lag9 (RR = 1.041, 95%CI: 1.002–1.081) to lag11 (RR = 1.053, 95%CI: 1.003–1.104) and lag4 (RR = 1.053, 95%CI: 1.019–1.088) to lag5 (RR = 1.052, 95%CI: 1.020–1.085), respectively. Moreover, a significant association between low percentile of RH (1th, 44%) and uveitis admissions appeared at lag0–8 (RR = 1.869, 95%CI: 1.017–3.434) and lasted until lag0–13 (RR = 2.539, 95%CI: 1.102–5.850) in the cumulative lag structure. Subgroup analyses indicated that males and the young seemed to be more sensitive to high MT exposure, while females appeared to be more vulnerable to low DTR exposure. Interestingly, both the young and the elderly are susceptible to low DTR and low RH exposure. Furthermore, high MT and low DTR exposure were associated with increased risk of first admission for uveitis. In summary, exposure to high-value of MT and low-value of DTR and RH may increase the hospital admissions for uveitis, especially for the status of first admission.
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