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Proportion of accepted claims (accepted claims/total claims) for each quarter of annual procedure volume
| Quarter | Accepted/ total claims (%) |
| Q1 | 26/41 (63) |
| Q2 | 47/112 (42) a |
| Q3 | 86/159 (54) |
| Q4 | 153/260 (59) |
| Total | 312/572 (55) |
Q1–Q4, see Table 4
aOmnibus chi-square statistic was significant at p = 0.02. Analysis of adjusted standardized residuals revealed Q2 to be the main contributor with a z-score of 3.0.
