Method and Apparatus for Reducing Errors in Screening-Test Administration
First Claim
1. A system for detecting a screening-test error, the system comprising:
- a measurement device that measures at least one performance parameter related to at least one screening-test task; and
a computational device, in communication with the measurement device, that receives the at least one measured performance parameter, calculates at least one performance statistical quantity characterizing the measured performance parameter, and compares the at least one performance statistical quantity to at least one reference statistical quantity associated with an error-free screening test.
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Abstract
A system for detecting a screening-test error includes a measurement device that measures at least one performance parameter related to at least one screening-test task and a computational device, in communication with the measurement device. The computational device receives the at least one measured performance parameter, calculates at least one performance statistical quantity characterizing the measured performance parameter, and compares the at least one performance statistical quantity to at least one reference statistical quantity associated with an error-free screening test. In accordance with a related embodiment, the system may further include a display device that displays the extent to which the at least one performance statistical quantity differs from the at least one reference statistical quantity.
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Citations
24 Claims
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1. A system for detecting a screening-test error, the system comprising:
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a measurement device that measures at least one performance parameter related to at least one screening-test task; and
a computational device, in communication with the measurement device, that receives the at least one measured performance parameter, calculates at least one performance statistical quantity characterizing the measured performance parameter, and compares the at least one performance statistical quantity to at least one reference statistical quantity associated with an error-free screening test. - View Dependent Claims (2)
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3-4. -4. (canceled)
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5. A method for detecting a screening-test error, the method comprising:
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measuring at least one performance parameter related to at least one screening-test task; and
calculating at least one performance statistical quantity characterizing the measured performance parameter; and
comparing the at least one performance statistical quantity to at least one reference statistical quantity associated with an error-free screening test. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for detecting errors in balance related screening tests, the method comprising:
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measuring a quantity related to a stability factor of a balance task performed in trials by a subject under a plurality of distinct sensory conditions;
obtaining thereby the quantity related to the stability factor for each trial;
determining a rank order for the quantities, each quantity for each trial being associated with a rank; and
determining if any of the ranks associated with a given one of the trials has fallen outside a reference range associated with the given trial performed under error-free conditions. - View Dependent Claims (18, 19, 20)
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21. A method for detecting a screening test error in an individual trial of a balance task during which sway deviation is measured, the method comprising:
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determining a quantity corresponding to a moving window root mean square value for velocity of the sway deviation, the window being short in relation to the duration of the trial but long in relation to the duration of a typical deviation in sway velocity; and
entering an alarm state when the quantity exceeds a threshold value.
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22. A method for detecting a screening test error due to malfunctions of at least one vertical force sensing device, the method comprising:
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determining a quantity corresponding to a moving window average value for the total vertical force measured by the device, the window beinglong in relation to the duration of expected spontaneous fluctuations in the total vertical force; and
entering an alarm state when the quantity deviates from a constant value by a predetermined threshold value.
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23. A method for detecting a screening test error due to malfunctions of at least one vertical force sensing device, the method comprising:
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calculating an average of a mathematical derivative for the total vertical form measured by the device to determine the rate of change of the total vertical force;
determining a quantity corresponding to an average rate of change of the total vertical force over a predetermined period of time; and
entering an alart state when the average deviates from zero by a predetermined threshold value.
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24. A method for detecting a screening test error due to malfunctions of at least one horizontal force sensing device;
- the method comprising;
calculating an average of a mathematical derivative for the total horizontal force measured by the device to determine the rate of change of the total horizontal force;
determining a quantity corresponding to an average rate of change of the total horizontal force over a predetermined period of time; and
entering an alarm state when the average deviates from zero by a predetermined threshold value.
- the method comprising;
Specification