Table 1. Outcome definitions.

Severe illness	At least one of the following danger signs:         -   Respiratory distress 1.         -   Inability to breastfeed or drink, or vomiting everything.         -   Drowsy.         -   Unable to sit.         -   Neck stiffness.         -   Fits.         -   Severe dehydration.         -   Severely pale.
Severe pneumonia	Cough/difficulty breathing and Tachypnoea 2 and at least one of the following:         -   Severe respiratory distress 1.         -   Central cyanosis.         -   Inability to breastfeed or drink, or vomiting everything.         -   Convulsion, lethargy or unconsciousness.
Pneumonia	Cough/difficulty breathing and Tachypnoea/lower chest indrawing and no signs of severe pneumonia.
Hospitalization	Children that were hospitalized.

1 Defined by the presence of very severe chest indrawing and/or nasal flaring and/or grunting in young infants.

2 Defined as follows: respiratory rate more than or equal to 50/minute for children aged 2 to 12 months and more than or equal to 40/minute for those aged from 12 months to 5 years.