Supporting Information file

File name:  PONE_SexRatio&NTD_database.csv
File type: Comma-separated values (CSV). A text file format that uses commas to separate values, and newlines to separate records.
File structure: Data (number of cases and total births) are tabulated by country, year, hospital and sex and sorted by: country + year + hospital + sex.

              storage   display    
variable name   type    format     description
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country         str3    %9s         Country: ARG=Argentina; CHL=Chile; VEN=Venezuela          
hospital        str5    %9s         Hospital IDs: An unique identification alphanumeric code wich is different for each of 95 hospitals from ECLAMC network.          
year            str4    %4s         Year of birth           
sex             byte    %8.0g       Sex: 0=Female; 1=Male
ntd             byte    %8.0g       Ntd: number of cases diagnosed with an isolated neural tube defect.          
births          int     %8.0g       Births: Total number of births.          
fa_arg          byte    %8.0g       Va_arg: Folic acid fortification period in Argentina: 0=pre-folic acid fortification period (1990-2003); 1=post-folic acid fortification period (2004-2013).           
fa_chl          byte    %8.0g       Va_chl: Folic acid fortification period in Chile: 0=pre-folic acid fortification period (1990-2000); 1=post-folic acid fortification period (2001-2013).           
anen            byte    %8.0g       Anen: number of cases diagnosed with an isolated anencephaly          
spb             byte    %8.0g       Spb: number of cases diagnosed with an isolated Spina bifida.          
cep             byte    %8.0g       Cep: number of cases diagnosed with an isolated Cephalocele.   
spb_ct          byte    %8.0g       Spb_ct: number of cases diagnosed with an isolated Cervico-thoracic spina bifida. 
spb_ls          byte    %8.0g       Spb_ls: number of cases diagnosed with an isolated Lumbo-sacral spina bifida.
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Poletta, Fernando A.; Rittler, Monica; Saleme, Cesar; Campaña, Hebe; Gili, Juan A.; Pawluk, Mariela S.; Gimenez, Lucas G.; Cosentino, Viviana R.; Castilla Eduardo E.; López-Camelo Jorge S.