Univariable and multivariable Cox regression analysis of potential predictors for developing otorrhea in children with tympanostomy tubes.

TTO = tympanostomy tube otorrhea; n = number; HR = hazard ratio; CI = confidence interval; SE = standard error; i = only results presented for independent predictors with p<0.05; NS = not significant; NA = not applicable; ii = 14 children for other indications; ENT = ear, nose and throat; URTI = upper respiratory tract infection; iii = diagnosis of allergic rhinitis, asthma, eczema or food allergy; iv = univariable analysis only including children younger than 4 years, school is mandatory for children 4 years and over; v = BMI was categorized into underweight or normal weight versus overweight according to the World Health Organization standards, corrected for age and gender. [24], [25]; vi = univariable analysis only including 1045 children with siblings; PCV-7 = 7-valent pneumococcal vaccine.