Number (%) of reviewer-assessed contributing factors to the MDOs
| Contributing factor | MDOs with this as the lead contributing factor n (%*) | MDOs with this as the lead or a secondary contributing factor n (%*) |
| Patient–practitioner clinical encounter | 52 (58) | 61 (68) |
| Performance and/or interpretation of diagnostic tests | 22 (25) | 31 (35) |
| Follow-up and tracking of diagnostic information | 21 (24) | 43 (48) |
| Subspecialty and referral related | 11 (12) | 17 (19) |
| Patient-specific processes | 5 (6) | 14 (16) |
| Unclear | 1 (1) | 3 (3) |
Percentages add to >100% due to multiple contributing factors for each MDO.
*Denominator is index consultations with at least one MDO, n=89.
MDO, missed diagnostic opportunity.