Objective To evaluate the cost effectiveness of human papillomavirus vaccine (HPV) for treating cervical cancer. Methods We constructed a Markov model to evaluate the cost-effectiveness of HPV versus Chinese healthy women aged 18 to 25 for treating Cervical Cancer. We calculated the clinical benefits and cost-effectiveness and judged the results based on willing to pay. Sensitivity analysis was made for parameters like cost, discounting rate and vaccine efficacy. Results HPV vaccination was a cost-effective option under the local willing to pay value with the incremental cost utility ratio 43 489 per QALY gained. It proved that vaccination was an economic and effective solution. Conclusion Given the results of Markov model, the cost effectiveness of HPV vaccination of Chinese women aged 18 to 25 is positive. Considering the data sources and model hypothesis, this report has some limitations. Further studies are warranted.
Objective To explore the causal relationship between DNA copy number and the risk of Alzheimer disease (AD) using Mendelian randomization (MR) methods, as well as to investigate the potential mediating effects of immune cells. Methods The data related to 731 immune cell types, DNA copy number and AD from the Genome-Wide Association Study database were collected. A bidirectional MR analysis was conducted to explore the causal relationship between DNA copy number and AD, primarily using the inverse-variance weighted method and MR-Egger method. Additionally, a two-step mediation analysis was performed to identify potential mediating immune cells. Results A total of 134 single-nucleotide polymorphisms were included for bidirectional MR analysis. The MR methods results showed a negative causal relationship between DNA copy number and the risk of AD (P<0.05), while the reverse analysis showed no statistical significance. Sensitivity analysis confirmed the robustness of these results. The mediation analysis indicated that the immune cell phenotype (HVEM on CD45RA-CD4+) partially mediated the causal relationship between DNA copy numbers and the risk of AD, with a mediation effect proportion of 4.6%. Conclusion An increase in DNA copy numbers may reduce the risk of AD, and immune cells partially mediate this causal relationship.
Objective To evaluate the disease burden of acne vulgaris in China from 1990 to 2019 and to provide references for the prevention and control of acne vulgaris in China. MethodsThe quantity of incidences/illnesses, age-standardized incidence/prevalence rates, disability-adjusted life years (DALYs), and DALY rate of acne vulgaris in China from 1990 to 2019 which were derived from the Global Burden of Disease (GBD) 2019 were evaluated. The epidemiological trends, age-birth-cohort trends, and the relationship between the incidence and sociodemographic index (SDI) were also analyzed. Results In 2019, the prevalence and incidence of acne vulgaris in China were higher than the global average. The quantity of patients was slightly higher in 2019 than that in 1990 (3.91%), and the prevalence, incidence, and DALY rate showed a continuous growth trend. The incidence of acne vulgaris peaked at 10 to 14 years old. Acne vulgaris mostly affected young males, and its prevalence peaked at approximately 15 to 19 years old. With these two age groups as the boundary, there was a trend of the prevalence of acne vulgaris increasing initially and then decreasing. Obvious gender differences existed for acne vulgaris diagnoses, and most of the above indicators were shown at a higher level in females than in males. The age period cohort analysis showed that the incidence rate of acne vulgaris in China from 1990 to 2019 was significantly different from the net drift, age effect, period effect and cohort effect. As the SDI value increased, the incidence of acne vulgaris showed a linear growth trend. Conclusions From 1990 to 2019, the burden of acne disease in China increases significantly.