Table 2.

Correlation between the patients' disease history data, the presence of sclerotic signs in tonsils and PCR data on Streptococcus pyogenes.

	Signs of sclerotic process
History data	Tonsillar sclerosis	Obstruction of crypts	All three signs	PCR for S. pyogenes
Frequency of tonsillitis episodes	NS	Rp = 0.354 P = 0.005	Rp = 0.299 P = 0.018	NS
Morbidity period	Rp = 0.437 P = 0.001	NS	Rp = 0.318 P = 0.011	Rp = 0.503 P = 0.012
Index of tonsillitis	Rp = 0.384 P = 0.002	NS	Rp = 0.325 P = 0.01	NS

R_p – Pearson correlation coefficient. NS – statistically nonsignificant correlation