Table 4. Baseline characteristics of the patients with or without tonsillectomy who did not receive steroid and immunosuppressant.

Characteristic	Tonsillectomy N = 97	Nontonsillectomy N = 103	P-value
Age, years	29 ± 8	30 ± 8	0.787
Gender, male/female	35/62	39/64	0.794
Chronic tonsillitis	73 (75%)	66(64%)	0.086
History of recurrent tonsillitis	76 (78%)	71 (69%)	0.131
Recurring gross hematuria during tonsillitis	39 (40%)	36 (35%)	0.443
Hematuria score, 0/0.5/1/2/3	3/6/15/49/24	1/13/22/46/21	0.285
Proteinuria, g/24h	0.50 (0.22, 1.13)	0.48 (0.24, 0.98)	0.599
Serum creatinine, μmoI/L	66 (54, 86)	71 (55, 84)	0.753
Serum IgA, mg/dl	2.90 ± 1.03	2.81 ± 1.00	0.584
Systolic blood pressure, mmHg	125 ± 16	123 ± 15	0.528
Diastolic blood pressure, mmHg	79 ± 12	80 ± 12	0.697
Mean arterial pressure, mmHg	94 ± 12	94 ± 12	0.984
Oxford Classification
M 0/1	49/48	48/55	0.580
E 0/1	96/1	103/0	0.302
S 0/1	26/71	29/74	0.831
T 0/1/2	80/15/2	85/17/1	0.884
C 0/1/2	70/26/1	85/16/2	0.098
Background therapy
RAS inhibitor	57(59%)	55(53%)	0.445

Notes.

Values are expressed as mean ± SD, medians (Q25, Q75) or % and compared using unpaired t-test, Mann–Whitney U test or chi-square test, respectively.