Formula List for Biostatistics
1)Permutation----nPr = n! ---- (n-r)! 2)Combination----nCr = nPr = n! ----- ------- n r! r! (n-r)! 3)Summation-----∑ X i i =1 n 4)Product--------Л Xi i=1
5)Age specific fertility rate(Asfr)=No of live birth at specific age ------------------------------------- No of women to specific age group Asfr=∑
6)Total fertility rate(TFR)= ∑ Asfr *group of year
7)Gross Reproductive Rate( GRR) =TFR*(100)sex ratio 205 f 8)Net Reproduction Rate (NRR)= {Σ( Asfr * nSx)} * group of year
9)Life Table- nLx= Persons year live in the Interval lx = No.of person live at particular age nqx = Proportion of person live at particular age nSx = nLx l0 * group of year , where l0 =5,00,000
10)Crude Death Rate (CDR)= Σ (Pi)*(asdri) →Direct Standardisation Σ Pi Where Pi= Population age wise, asdri = Age specific death rate in particular age
At population level, s Standard Death rate = Σ Pi*asdri s s Σ Pi Where ,P =Standard Population ,i=age group
5)Age specific fertility rate(Asfr)=No of live birth at specific age ------------------------------------- No of women to specific age group Asfr=∑
6)Total fertility rate(TFR)= ∑ Asfr *group of year
7)Gross Reproductive Rate( GRR) =TFR*(100)sex ratio 205 f 8)Net Reproduction Rate (NRR)= {Σ( Asfr * nSx)} * group of year
9)Life Table- nLx= Persons year live in the Interval lx = No.of person live at particular age nqx = Proportion of person live at particular age nSx = nLx l0 * group of year , where l0 =5,00,000
10)Crude Death Rate (CDR)= Σ (Pi)*(asdri) →Direct Standardisation Σ Pi Where Pi= Population age wise, asdri = Age specific death rate in particular age
At population level, s Standard Death rate = Σ Pi*asdri s s Σ Pi Where ,P =Standard Population ,i=age group