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Table 1 Sample selection for children

From: Impact of the Umoyo mother-infant pair model on HIV-positive mothers’ social support, perceived stigma and 12-month retention of their HIV-exposed infants in PMTCT care: evidence from a cluster randomized controlled trial in Zambia

Selected characteristics

Pre implementation

Post implementation

Birth

1 Nov 2015–31 Mar 2016

1 Nov 2016–31 Mar 2017

Age at 6-week DNA PCR test

4 to 12 weeks old

4 to 12 weeks old

Date of 6-week DNA PCR test

1 Jan 2016–30 Apr 2016

1 Jan 2017–30 Apr 2017

Follow-up 10-week visit

Yes

Yes

  1. Note: dates are all inclusive
  2. DNA PCR deoxyribonucleic acid polyerase chain reaction