Table 7 Mean and confidence interval measures of reliability for question responses and COD predictions in the short form of the Verbal Autopsy Instrument

Question reliability

Question endorsement ratio

0.117 (0.089, 0.146)

0.224 (0.172, 0.275)

0.249 (0.193, 0.306)

0.178 (0.153, 0.203)

Question proportion agreement

0.927 (0.926, 0.928)

0.896 (0.892, 0.900)

0.913 (0.909, 0.916)

0.922 (0.921, 0.923)

Question kappa

0.438 (0.394, 0.483)

0.570 (0.503, 0.637)

0.539 (0.471, 0.607)

0.497 (0.464, 0.530)

Question proportion loss

0.457 (0.413, 0.501)

0.297 (0.237, 0.356)

0.347 (0.276, 0.419)

0.388 (0.355, 0.421)

Question proportion gain

0.517 (0.470, 0.563)

0.359 (0.297, 0.422)

0.376 (0.304, 0.448)

0.441 (0.407, 0.476)

Decedent question reliability

Decedent proportion agreement

0.927 (0.926, 0.928)

0.896 (0.892, 0.900)

0.913 (0.909, 0.916)

0.922 (0.921, 0.923)

Decedent question kappa

0.642 (0.634, 0.650)

0.727 (0.715, 0.740)

0.757 (0.741, 0.772)

0.676 (0.670, 0.683)

COD prediction reliability

COD prediction Match

0.415 (0.389, 0.441)

0.524 (0.472, 0.577)

0.719 (0.673, 0.765)

0.487 (0.465, 0.508)

COD prediction validity

Correct assignment of COD

0.376 (0.358, 0.394)

0.360 (0.324, 0.395)

0.618 (0.582, 0.653)

0.416 (0.401, 0.430)