<prompt> MMR is expressed inPer 1,000 live bihPer 10,000 live bihPer Lac live bihPer 10 Lac live Bih  <response>: Maternal moality ratioTotal no of female deaths due to complications of pregnancy, childbih or within 42 days of delivery from puerperal causes in an area during a given year Total no of live bihs in the same area and year x 1000Maternal moality ratio: Number of maternal deaths during a given time period per 100,000 live bihs during the same time period Refer: K. Parks Textbook of Preventive and Social Medicine, 24th edition, pg no: 593 