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POTS phenotypes.
| Phenotype* | N = 352 † | Frequency (%) |
|---|---|---|
| A | 93 | 26.4 |
| AO | 81 | 23.0 |
| AN | 50 | 14.2 |
| ANO | 40 | 11.4 |
| N | 27 | 7.7 |
| None | 24 | 6.8 |
| O | 21 | 6.0 |
| NO | 16 | 4.5 |
*A = Hyperadrenergic, N = Neuropathic, O = Hypovolemic.
†Phenotypes unable to be determined in 26 participants due to incomplete testing.
