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. 2018 Sep;33(5):416–422. doi: 10.5001/omj.2018.76

Table 2. The difference in mean score between patient expectation and perception (SQ gap) based on SERVQUAL dimensions (N = 386).

SERVQUAL dimensions Mean ± SD Mean difference, SQ gap (95% CI) t-test p-value
Expectation Perception
Tangible 4.44 ± 0.44 4.19 ± 0.53 -0.25 (-0.30, -0.19) -9.14 < 0.001
Reliable 4.49 ± 0.44 4.36 ± 0.51 -0.13 (-0.18, -0.08) - 4.93 < 0.001
Responsiveness 4.48 ± 0.46 4.35 ± 0.50 -0.13 (-0.18, -0.07) - 4.87 < 0.001
Assurance 4.50 ± 0.46 4.32 ± 0.49 -0.18 (-0.23, -0.13) - 4.87 < 0.001
Empathy 4.56 ± 0.46 4.40 ± 0.51 -0.16 (-0.20, -0.10) -5.65 < 0.001

SQ: service quality; SERVQUAL: SERV-service, QUAL- quality; SD: standard deviation; CI: confidence interval.