Figure 2
From: Using mobile phone text messaging for malaria surveillance in rural Kenya
Proportion of health facilities that responded to surveillance data request messages and SMS formatting errors by week. Black bars show responses within 0–24 hrs; dark grey bars responses within 24–27 hrs (after reminder but within incentive period); light grey bars responses within 27 hrs-7 days (after the incentive period); white bars shows no responses, and black line shows SMS formatting errors.