哪项指标反映了测试结果的可靠性，表示在相同条件下重复测试时测试结果保持一致的可能性？

Statistical significance (or statistical strength) directly addresses the reliability of test results, indicating the probability that observed differences are not due to random chance. When a test result is statistically significant, it suggests that if the experiment were repeated under the same conditions, similar results would likely be obtained, thus reflecting consistency and reliability. Absolute brand lift and relative brand lift are metrics that measure the impact of a campaign on brand perception or awareness, but they do not inherently reflect the reliability or repeatability of the test itself. "无法衡量此可能性" (Cannot measure this possibility) is incorrect because statistical significance is precisely how this possibility is measured.