Table 2.2. Solution priority number calculations
|Solution priority number (SPN)
||SPN = Effectiveness x cost x implementation.
||Very effective solution (3). The probability of occurrence can be
eliminated or reduced dramatically, or a control measure
capable of detecting the error can be installed. |
|Effective solutions (2). The probability of occurrence can be
reduced. Despite the reduction there is still significant risk of
hazard. Measures capable of detecting the error are not in
|Ineffective solutions (1). The probability of occurrence cannot be
reduced, and measures capable of detecting the error are not
||Low cost (3) can be paid for out of daily operating budget. |
|Moderate cost (2) needs to be paid for out of unit-level budget.|
|High cost (1) requires payment from hospital-level budget.
||Easy (3) requires no training. |
|Moderate (2) requires a training course, and some resistance
|Difficult (1) implementation means that a culture change is
needed, and strong resistance is expected.
Note: Godfrey, et al.32 described their scales for effectiveness, cost, and implementation more precisely than that
presented here by tightly linking it to hazard scores in the Department of Veterans Affairs Healthcare Failure Modes and Effects Analysis (HFMEA).
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