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Table 2 Sample and data collection time points

From: A double blind randomized controlled trial in neonates to determine the effect of vitamin A supplementation on immune responses: The Gambia protocol

  Infant age (weeks)
Measurement 0* 1 3 6 8 12 16 17 26 40 52
EPI X     X X X   X X X
Thymic index   X   X   X   X    
Venous bleed (Infant)     X     X    
Venous bleed (Mothers)   X   X        
Tuburculin skin test     X        
Modified relative dose response         X    
Anthropometry (Infant) X X   X X X X X X X X
Anthropometry (Mother) X    X   X   X    
Morbidity X X X X X X X X X X X
  1. *within 48hs of birth Note: Adverse event visits were carried out at 24 and 72 hours post-supplementation. Mothers’ venous bleed at 1 week was to determine HIV status before the 6 week time point.