Ah hell, I'll make it easy for you:

"IBC's documentary evidence is drawn from crosschecked media reports of violent events leading to the death of civilians, or of bodies being found, and is supplemented by the careful review and integration of hospital, morgue, NGO and official figures.

Systematically extracted details about deadly incidents and the individuals killed in them are stored with every entry in the database. The minimum details always extracted are the number killed, where, and when.

Confusion about the numbers produced by the project can be avoided by bearing in mind that:

***** IBC's figures are not 'estimates' but a record of actual, documented deaths. *****

IBC records solely violent deaths.

IBC records solely civilian (strictly, 'non-combatant') deaths.

IBC's figures are constantly updated and revised as new data comes in, and frequent consultation is advised."

***emphasis by TIA***