Maternal SAEs during intervention period (enrollment to 9 mo post partum), number resulting in ARV substitution, and proportion of women initiated on ARV who required substitution.

a

Each participant only reported once for primary reason for ARV substitution between enrollment and 9-mo post partum.

b

Includes one participant where SAE attributed to ZDV, but stopped all ARVs.

c

Includes two participants who stopped both NVP and ZDV.

d

Includes one participant who stopped both NVP and ZDV.

DVT, deep venous thrombosis.