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df sccdez-s , s ec ondary postpartum haemorr hage and ot he r
complications of childbir t h were determi ne d using the
followi ng s tated f ormula;
Numbe r o f new c a s e s of a s pecific
Incidence rate = d i s e a s e condition X 10 0 0
Tot al numbez of SUbjects
examine d on foll ow-up or a dmitt ed .
s Ince some sUbjects were lost to f oll ow up , overall morbidity
i nc i de nc e ra tes a re a lso calculated f or an " e t; worst"
situation . i e , all su b j r:cts lost were i l ll or a n "at best"
sit ua tion ie, all eubj ecbs, lost were ",ell. The denominator
us ed for t his calculation was a l l expected s ub j ects at t he
clinic.
I dent i f y i ng the determinants of mor bidity: To determine if
certain soc io-demographic, pregnancy , a nd l abour variables are
identi f iable risk factors for specific mor biditi es, t he
preval ence or distr i but i on o f the s e va r iables were compared
among t hose with a nd ....ithout the specific morbidity.
u nivariate compa risons wer e do ne by Ch i -square t est an d
Stude nts t -test for ca tegorical va r Leb j.ee and continuous
variables respectively. Two by t wo table a na lysis W.iS also
perfo rmed to obtai n t h e rel ative risk r ati os, their co nfide nce
intervals, and p-vatues,