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Descriptive statistics (number of observations=3446).
| Variable | Values, mean (SD) | Values, median | Values, minimum | Values, maximum |
| OverallRating | 3.64 (1.43) | 4.25 | 1 | 5 |
| HelpfulnessRating | 3.54 (1.65) | 4.37 | 1 | 5 |
| KnowledgeRating | 3.74 (1.54) | 5 | 1 | 5 |
| StaffRating | 3.69 (1.48) | 4 | 1 | 5 |
| PunctualityRating | 3.60 (1.49) | 4 | 1 | 5 |
| TopicCare | 0.41 (0.45) | 0 | 0 | 1 |
| TopicSurgery | 0.27 (0.40) | 0 | 0 | 1 |
| TopicStaff | 0.32 (0.42) | 0 | 0 | 1 |
| RiskScore | 1.23 (0.41) | 1.14 | 0.53 | 5.62 |
