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 NER_1992_DHS_v01_M,1453,F8,V176,b0,"Child is twin",discrete,0,,,,,,,,,,,,,[],,"[{""value"":""0"",""labl"":""Single birth"",""is_missing"":null,""stats"":[]},{""value"":""1"",""labl"":""1st of multiple"",""is_missing"":null,""stats"":[]},{""value"":""2"",""labl"":""2nd of multiple"",""is_missing"":null,""stats"":[]},{""value"":""3"",""labl"":""3rd of multiple"",""is_missing"":null,""stats"":[]},{""value"":""4"",""labl"":""4th of multiple"",""is_missing"":null,""stats"":[]},{""value"":""5"",""labl"":""5th of multiple"",""is_missing"":null,""stats"":[]}]",,[],"{""type"":""numeric"",""schema"":""other"",""category"":null,""name"":null}","Twin code gives an order number for each child of a multiple birth. Code 0 indicates a single birth, code 1 upwards give the number of the child. Twins are ordered in the birth history with the higher twin codes appearing before the lower twin codes. See the example of the birth history structure below."