Keep it simple, stupid. https://irdya.top/ 2026-05-06T14:59:48+00:00 https://irdya.top/ https://irdya.top/_media/wiki/logo.png text/html 2023-10-14T09:33:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://irdya.top/zh/med/calc?rev=1697275986&do=diff 流行病学计算 患病对照合计阳性aba+b阴性cdc+d合计a+cb+da+b+c+d * 敏感度=$\frac{a}{a+c}$ * 特异度=$\frac{d}{b+d}$ * 阳性预测值$\frac{a}{a+b}$ * 阴性预测值=$\frac{d}{c+d}$ * 假阳性率=$\frac{b}{b+d}$=1-特异度 * 假阴性率=$\frac{c}{a+c}$=1-敏感度 * 阳性似然比=$\frac{敏感度}{假阳性率}$=$\frac{敏感度}{1-特异度}$=$\frac{a(b+d)}{b(a+c)}$ * 阴性似然比=$\frac{假阴性率}{特异度}$$\frac{1-敏感度}{特异度}$$\frac{c(b+d)}{d(a+c)}$$\frac{a+c}{a+b+c+d}$$\frac{a}{a+b}$$\frac{检查前概率\times敏感度}{1+检查前概率\times(敏感度+特异度-1)-特异度}$$\frac{c}{c+d}$$\frac{检查前概率\times(1-敏感度)}{特异度-检查前概率\times(敏感度+特… text/html 2022-05-25T18:24:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://irdya.top/zh/med/circulation?rev=1653503099&do=diff 循环系统 心血管系统疾病的诊治、检查方法。 circulation index text/html 2022-05-25T18:24:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://irdya.top/zh/med/drug?rev=1653503099&do=diff 药物 快速查询，仅作参考。 drug index text/html 2022-05-25T18:24:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://irdya.top/zh/med/respiratory?rev=1653503099&do=diff 呼吸系统 呼吸系统疾病诊治总结。 respiratory index text/html 2022-05-25T18:24:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://irdya.top/zh/med/spinal?rev=1653503099&do=diff 脊髓节段 运动 C5肘屈肌群肱二头肌、肱肌C6腕伸肌群桡侧伸腕长和短肌C7肘伸肌群肱三头肌C8指屈肌群（中指远端指节）指深屈肌T1指外展肌群（小指）小指外展肌L2髋屈肌群髂腰肌L3膝伸肌群