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Table 1 Inclusion and exclusion criteria

From: Maternal hair selenium levels as a possible long-term nutritional indicator of recurrent pregnancy loss

Inclusion criteria   Exclusion criteria  
CASES CONTROLS CASES CONTROLS
Non pregnant women Non pregnant women Currently pregnant or lactating Currently pregnant or lactating
Three consecutive 1st trimester miscarriage or two 2nd trimester losses Uncomplicated obstetric history Cause for RPL identified. Any underlying medical condition that may cause RPL
No live births after miscarriages One or more successful pregnancies Use of hormonal contraception in preceding 6 months Use of hormonal contraception in preceding 6 months
No diagnosis for RPL established N/A Not living in Cape Town for more than 2 years Not living in Cape Town for more than 2 years
No hormonal contraception in preceding 6 months Not on hormonal contraception