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Table 3 Effect of tranexamic acid (TXA) on death or hysterectomy by subgroups

From: The effect of tranexamic acid on the risk of death and hysterectomy in women with post-partum haemorrhage: statistical analysis plan for the WOMAN trial

Subgroup TXA Placebo Risk ratio (99 % CI)
  Death or hysterectomy Received TXA Death or hysterectomy Received Placebo  
Time between delivery and randomisation:      
 ≤ 1 h NN (X %) N NNN NN (X %) N NNN X.XX (X.XX–X.XX)
 1–3 h NN (X %) N NNN NN (X %) N NNN X.XX (X.XX–X.XX)
 > 3 h NN (X %) N NNN NN (X %) N NNN X.XX (X.XX–X.XX)
 (p = 0.XXX)*      
Type of delivery:      
 Vaginal NN (X %) N NNN NN (X %) N NNN X.XX (X.XX–X.XX)
 Caesarean section NN (X %) N NNN NN (X %) N NNN X.XX (X.XX–X.XX)
 (p = 0.XXX)      
Primary cause of haemorrhage:      
 Uterine atony NN (X %) N NNN NN (X %) N NNN X.XX (X.XX–X.XX)
 Other/unknown NN (X %) N NNN NN (X %) N NNN X.XX (X.XX–X.XX)
 (p = 0.XXX)      
  1. Notes
  2. *p values from unadjusted tests of interaction in a logistic regression model to assess evidence for whether the effect of treatment differs across subgroup categories