Text ( visual ) : unmediated Single and multiple decrement life table procedures for the analysis of the use-effectiveness of contraception. -- [Chicago] : Community and Family Study Center, University of Chicago , 1973. -- iii, 131 p. : ill. ; 23 cm. -- (Family planning research and evaluation manual ; no. 8). -- Cover title ; Includes bibliographical references. -- (BA01271801) ; https://ci.nii.ac.jp/ncid/BA01271801 Author Heading(s): Sinquefield, Jeanne Cairns. -- Classification(s): LCC : HQ763.5 ; DC : 362.8/2. -- Subject Heading(s): LCSH : Birth control -- Research ; LCSH : Birth control -- Data processing ; LCSH : Evaluation research (Social action programs)