| 0 |
0 I never or rarely experience problems thinking and concentrating when I stand up |
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0 I never or rarely experience problems thinking and concentrating when I stand up |
| 1 |
1 I sometimes experience problems thinking and concentrating when I stand up |
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1 I sometimes experience problems thinking and concentrating when I stand up |
| 2 |
2 I often experience problems thinking and concentrating when I stand up |
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2 I often experience problems thinking and concentrating when I stand up |
| 3 |
3 I usually experience problems thinking and concentrating when I stand up |
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3 I usually experience problems thinking and concentrating when I stand up |
| 4 |
4 I always experience problems thinking and concentrating when I stand up |
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4 I always experience problems thinking and concentrating when I stand up |