Table 1.

Patients’ characteristics of all patients (n = 1398).

Parameter	All		2011		2015		2019		p
	n	%	n	%	n	%	n	%
All	1398	100	626	100	518	100	254	100
Gender									0.550
Male	547	39.1	242	38.7	198	38.2	107	42.1
Female	851	60.9	384	61.3	320	61.8	147	57.9
Reason against surgery									0.027
Patient had surgery	1383	98.9	625	99.8	510	98.5	248	97.6
Contraindication	1	0.1	0	0	0	0	1	0.4
Patient declined surgery	1	0.1	0	0	1	0.2	0	0
No indication	13		1	0.2	7	1.4	5	2.0
Setting									0.118
Inpatient	1389	99.4	625	99.8	513	99.0	251	98.8
Outpatient	9	0.6	1	0.2	5	1.0	3	1.2
Surgery									0.007
Yes	1383	98.9	625	99.8	510	98.5	248	97.6
No	15	1.1	1	0.2	8	1.5	6	2.4
Type of tonsil surgery*									0.056
Tonsillectomy	1358	98.2	617	98.7	502	98.4	239	96.4
Tonsillotomy	25	1.8	8	1.3	8	1.6	9	3.6
Additional adenoidectomy*									0.297
No	1381	99.9	623	99.7	510	100	248	100
Yes	2	0.1	2	0.3	0	0	0	0
Side of surgery*									0.026
One side	16	1.2	5	0.8	4	0.8	7	2.8
Both sides	1367	98.8	620	99.2	506	99.2	241	97.2

	Mean ± SD	Mean ± SD	Mean ± SD	Mean ± SD
Age, years	23.8 ± 12.4	22.1 ± 12.6	25.3 ± 12.3	25.0 ± 11.5	< 0.001
Tonsillitis episodes last 12 months, n = 1383	3.98 ± 2.01	3.82 ± 1.89	3.78 ± 1.89	4.78 ± 2.30	< 0.001
Treatment duration, days*	6.0 ± 1.4	6.2 ± 1.4	6.0 ± 1.4	5.7 ± 1.5	< 0.001

Significant p-values (p < 0.05) in bold.

SD standard deviation.

*Only of the patients who underwent surgery.