survey_idno,sid,file_id,vid,name,labl,var_intrvl,var_dcml,var_wgt,var_start_pos,var_end_pos,var_width,var_imputation,var_security,var_respunit,var_qstn_preqtxt,var_qstn_qstnlit,var_qstn_postqtxt,var_qstn_ivuinstr,var_universe,var_sumstat,var_txt,var_catgry,var_codinstr,var_concept,var_format,var_notes COD_2013_DHS_v01_M,2173,F15,V628,b11,"Preceding birth interval (months)",contin,0,,,,,,,,"All births except the first birth and its twins.",,,,,[],,[],,[],"{""type"":""numeric"",""schema"":""other"",""category"":null,""name"":null}","Preceding birth interval is calculated as the difference in months between the current birth and the previous birth, counting twins as one birth."