《医学统计学》 P

pairing data配对资料parameter参数percent百分率percentage百分数，百分率percentage bar chart百分条图percentile百分位数pie diagram园图placebo安慰剂planning of survey调查计划point estimation点估计population总体，人口population mean总体均数population rate总体率population variance总体方差positive correlation正相关positive skewness正偏态power of a test把握度，检验效能prevalence rate患病率probability概率，机率probability error偶然误差proportion比，比率prospective study前瞻研究prospective survey前瞻调查public health statistics卫生统计学