Lines Matching refs:births

68 data(births)
69 births$hyp <- factor(births$hyp,labels=c("normal","hyper"))
70 births$sex <- factor(births$sex,labels=c("M","F"))
76 effx(bweight,exposure=hyp,data=births)
78 effx(bweight,exposure=hyp,strata=sex,data=births)
80 effx(bweight,exposure=hyp,control=sex,data=births)
84 effx(bweight,exposure=gestwks,data=births)
86 effx(bweight,exposure=gestwks,strata=sex,data=births)
88 effx(bweight,exposure=gestwks,control=sex,data=births)
92 effx(lowbw,type="binary",exposure=hyp,data=births)
93 effx(lowbw,type="binary",exposure=hyp,eff="RR",data=births)