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Table 4 Mean score of the OIQ items in each subgroup

From: Orthostatic intolerance symptoms are associated with depression and diminished quality of life in patients with postural tachycardia syndrome

(n = 107) OIQ score
0–4
(n = 16)
5–9
(n = 15)
10–14
(n = 21)
15–19
(n = 25)
20–24
(n = 17)
25–29
(n = 4)
30–34
(n = 6)
35–39
(n- = 3)
Total
1. Nausea 0.1 ± 0.1 0.3 ± 0.2 0.5 ± 0.2 1.3 ± 0.3 1.5 ± 0.3 3.0 ± 0.7 3.0 ± 0.5 3.0 ± 0.6 1.1 ± 0.1
2. Tremor in hands 0.1 ± 0.1 0.5 ± 0.3 0.4 ± 0.2 0.7 ± 0.2 1.2 ± 0.2 3.3 ± 0.3 2.7 ± 0.3 3.7 ± 0.3 0.9 ± 0.1
3. Dizziness 1.1 ± 0.3 1.4 ± 0.2 2.5 ± 0.3 2.8 ± 0.2 3.4 ± 0.2 3.3 ± 0.5 3.8 ± 0.2 4.0 ± 0.0 2.5 ± 0.1
4. Palpitation 0.3 ± 0.1 0.5 ± 0.2 0.9 ± 0.2 1.8 ± 0.2 2.8 ± 0.3 2.5 ± 0.7 3.5 ± 0.2 4.0 ± 0.0 1.5 ± 0.1
5. Headache 0.5 ± 0.2 1.2 ± 0.3 2.3 ± 0.3 2.4 ± 0.2 2.8 ± 0.2 3.3 ± 0.5 4.0 ± 0.0 3.7 ± 0.3 2.2 ± 0.1
6. Profuse perspiration 0.1 ± 0.1 0.1 ± 0.1 0.4 ± 0.2 1.2 ± 0.2 0.6 ± 0.2 0.3 ± 0.3 1.3 ± 0.5 3.0 ± 0.6 0.7 ± 0.1
7. Blurred vision 0.4 ± 0.2 0.6 ± 0.2 0.8 ± 0.2 1.2 ± 0.2 1.9 ± 0.3 1.3 ± 0.8 2.5 ± 0.6 4.0 ± 0.0 1.2 ± 0.1
8. Chest discomfort 0.0 ± 0.0 0.7 ± 0.2 0.6 ± 0.2 1.5 ± 0.2 1.8 ± 0.3 3.0 ± 0.4 3.7 ± 0.2 4.0 ± 0.0 1.3 ± 0.1
9. Lightheadedness 0.2 ± 0.1 0.8 ± 0.2 1.5 ± 0.3 2.3 ± 0.2 2.9 ± 0.2 3.5 ± 0.3 3.8 ± 0.2 4.0 ± 0.0 1.9 ± 0.1
10. Concentration difficulties 0.3 ± 0.1 0.7 ± 0.2 1.4 ± 0.3 2.1 ± 0.2 2.4 ± 0.2 3.5 ± 0.3 4.0 ± 0.0 3.7 ± 0.3 1.7 ± 0.1
OIQ total 3.0 ± 0.3 6.7 ± 0.4 11.3 ± 0.3 17.3 ± 0.3 21.2 ± 0.3 26.8 ± 1.0 32.3 ± 0.8 37.0 ± 1.0 14.9 ± 0.9
  1. The values are demonstrated as the mean ± SEM
  2. The two most common symptoms in each group are displayed in bold characters