| 0 | No episode of otorrhea, and no pus or granulation on otologic examination |
| 1 | One episode of otorrhea of <2 wk duration in a 3-month period or no otorrhea but a subjective feeling of wetness in the ear |
| 2 | More than one episode of otorrhea in a 3-mo period, or an episode of otorrhea lasting more than 2 wk, or otologic examination showing localized granulation tissue/pus that was promptly cured with antibiotic drop, curettage, or silver nitrate cautery |
| 3 | Constant purulent otorrhea on a daily basis, or otologic examination showing extensive granulation tissue, or need for a revision procedure to control infection |