Table 4. Symptom scores between subgroup A and subgroup B in POTS.

Groups	n	Symptom score at first visit	Symptom score at the end of follow-up
Subgroup A	24	4.88±1.23	2.21±0.8
Subgroup B	21	4.43±1.33	3.67±1.23
t	-	-1.173	4.687
P value	-	0.247	0.0001

POTS: postural tachycardia syndrome