Table 1 Distribution frequency of non-continuous predictive variables in relation to the outcome of tympanopalsty before regression analysis

Contralateral ear

Normal

18

66.7

16

76.2

0.47

Tympanic perforation/OME^a/atelectasis

9

33.3

5

23.8

Previous adenoidectomy

No

15

55.6

12

57.1

0.91

Cause of perforation

Infection

23

85.2

18

85.7

0.95

Size of perforation

<50%

15

55.6

14

66.7

0.43

State of mucosa

Normal

23

85.2

17

81.0

0.70

Surgical technique

onlay

23

85.2

18

85.7

0.96

Craniofacial dysmorphia

No

22

81.5

21

100.0

0.04

Otorrhea at time of surgery

Absent

26

96.3

19

90.5

0.40