Reporting delays in CBV data.

Panel a: delays in reporting of births. Panel b: delays in reporting of deaths, by district.Notes: each circle represents the number of events having occurred during month x and being recorded during month y. The size of each circle is proportional to the number of such events. The red line represents the absence of reporting delays, i.e., x = y. Circles above the red line represent events reported with delays, whereas circles below the red line represent events that were reported before they occurred (i.e., possible data entry errors).