Where comparisons are available , two columns are provided in the table . The first column is Port St . Lucie ' s percent positive . The second shows the comparison of Port St . Lucie ' s rating to the benchmark , where Port St . Lucie ' s results are noted as being “ higher ” than the benchmark , “ lower ” than the benchmark or “ similar ” to the benchmark . These labels come from a statistical comparison of Port St . Lucie ' srating to the benchmark where a rating is considered “ similar ” if it is within the margin of error ( five percentage points or less ) and “ higher ” or “ lower ” if the difference between Port St . Lucie ' s rating and the benchmark is greater the margin of error ( greater than five percentage points ).
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