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Table 3 Departure of a hospital's CSR (expressed as a percentage) from the national CSR or trend, Belgium, 2001–4.

From: Screening for inter-hospital differences in cesarean section rates in low-risk deliveries using administrative data: An initiative to improve the quality of care

ID1 Period Trend IP10
  LB_B2 LB_953 D(%) 4 UB_955 UB_B6 CI_957 CI_B8 P9 LB_B2 LB_953 D(%) 4 UB_955 UB_B6 CI_957 CI_B8 P9  
1 -18 -10 3 16 28 NS NS 0.68283 -11 -7 -2 4 8 NS NS 0.51065 GM
2 24 33 44 56 66 + + <0.00001 -8 -5 -1 3 6 NS NS 0.57928 EA
3 -20 -10 5 23 38 NS NS 0.49978 -16 -11 -5 2 8 NS NS 0.18024 GM
4 9 18 31 44 56 + + <0.00001 -8 -4 0 5 9 NS NS 0.90712 GM
5 -20 -11 1 15 27 NS NS 0.88383 -10 -6 0 5 10 NS NS 0.93539 GM
6 9 14 21 29 35 + + <0.00001 0 2 5 8 10 + NS 0.00045 GM
7 0 7 16 26 35 + NS 0.00061 -9 -7 -3 1 4 NS NS 0.11081 GM
8 -32 -26 -19 -11 -5 - - <0.00001 -10 -7 -3 1 4 NS NS 0.10727 GM
9 -12 -7 1 10 17 NS NS 0.75745 -2 1 4 8 11 + NS 0.01709 GM
10 -45 -40 -33 -26 -19 - - <0.00001 -7 -3 1 6 9 NS NS 0.67442 EA
  1. 1 ID: Anonymous hospital identifier;
  2. 2 LB_B: Lower bound of the Bonferroni confidence interval;
  3. 3 LB_95: Lower bound of the 95% confidence interval;
  4. 4 D: departure of a hospital's CSR compared with the national CSR/national trend;
  5. 5 UB_95: Upper bound of the 95% confidence interval;
  6. 6 UB_B: Upper bound of the Bonferroni confidence interval;
  7. 7 CI_95: +: a 95% CI suggests a significantly higher hospital's rate/trend compared with the national rate/trend,
  8. -: a 95% CI suggests a significantly lower hospital's rate/trend compared with the national rate/trend,
  9. NS: a 95% CI does not suggest a significant departure of the hospital's rate/trend compared with the national rate/trend.
  10. 8 CI_B: +: a Bonferroni-corrected CI strongly suggests a significantly higher hospital's rate/trend compared with the national rate/trend,
  11. -: a Bonferroni-corrected CI strongly suggests a significantly lower hospital's rate/trend compared with the national rate/trend,
  12. NS: a Bonferroni-corrected CI does not suggest a significant departure of the hospital's rate/trend compared with the national rate/trend.
  13. 9 P value: Probability of observing departures such as these assuming the null hypothesis of no departure is true.
  14. 10IP: Interpretation: EA: External audit and general measures recommended; GM: General measures recommended.