TABLE 2

Forms used for the pneumonia outcome of the Household Air Pollution Intervention Network (HAPIN) trial

FormPurposeAdministrationTimeline
Formative Research
 Health facility formIdentify the characteristics of each health facility that would potentially care for a childHealth facility leader completes survey in conjunction with HAPIN staffMajority completed prior to the birth of the first HAPIN study child with additional forms completed as the catchment area expanded
Main HAPIN trial
 Pneumonia diagnosis form in a health facilityIdentify children with severe pneumonia at sentinel health facilitiesHAPIN staff in conjunction with the mother or caregiver and the childWithin 24 h of arrival of the child to the sentinel health facility
 Home visitDetermine if a child had visited a health facility in order to identify missed cases and gaps in our surveillance systemHAPIN staff in conjunction with the mother or caregiver and the childHome visits when the child is 1, 3, 6, 9 and 12 months of age
 Admission chart reviewAbstraction of the chart of any HAPIN child who presents to a sentinel facility to determine if the child had pneumoniaHAPIN staffConcurrently with the case ascertainment form when a HAPIN child presents to a sentinel health facility or completed through retrospective chart abstraction if a child is identified as to have visited a health facility identified in a home visit
 Discharge chart reviewAbstraction of the hospital chart to determine the severity of illness of HAPIN children admitted to the hospitalHAPIN staffAfter discharge from the hospital when the chart is available
 Ultrasound interpretationInterpretation of lung ultrasounds obtained in HAPIN children who meet imaging criteria to determine if primary endpoint pneumonia is presentHAPIN-certified sonographers in TRICECompleted by the HAPIN sonographer who performs the scan and two other sonographers randomised from the panel of HAPIN-trained sonographers
 Radiograph collectionCollection and quality control of radiographs obtained in HAPIN children who meet imaging criteriaHAPIN staffWhen a radiograph is collected, concurrently with the case ascertainment form or chart review form
 Radiograph interpretationInterpretation of chest radiographs in HAPIN children who meet imaging criteria and cannot get an ultrasound to determine if primary endpoint pneumonia is presentHAPIN-certified radiologists in TRICEWhen a radiograph is uploaded by HAPIN staff and assigned to two randomly assigned radiologists from our trained panel