Does supportive supervision intervention improve community health worker knowledge and practices for community management of childhood diarrhea and pneumonia? Lessons for scale-up from Nigraan and Nigraan Plus trials in Pakistan.

Supportive supervision including written feedback and frequent supervisor contact could improve the performance of community-based workers in managing diarrhea and pneumonia among children. Positive lessons for provincial scale-up can be drawn. Trial registration Both trials are registered with the 'Australian New Zealand Clinical Trials Registry'. Registration numbers: Nigraan Trial: ACTRN1261300126170; Nigraan Plus: ACTRN12617000309381.