Table 1.

Diagnostic features reported by postural orthostatic tachycardia syndrome (POTS) patients

	Female patients		Male patients		P
	n	%	n	%
Misdiagnosed	5893	76.2	388	74.9	0.5
Physical illness acknowledged but physician was unsure how to proceed	5580	71.5	377	72.2	0.7
Physician said it was a psychological disorder	6074	77.7	389	74.2	0.07
Physician said it was all in your head	5370	68.8	328	62.5	0.002
Suggested POTS to physician before physician suggested it	2839	36.3	199	37.9	0.5
Diagnosed by a cardiologist	4668	56.6	288	41.7	0.02
Diagnosed by a neurologist	1491	18.1	127	22.8	0.005