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Table 2 Clusters of opioid-related adverse drug reactions for hospitalisation in NSW

From: Adverse drug reactions due to opioid analgesic use in New South Wales, Australia: a spatial-temporal analysis

Cluster No. post-code areas Observed cases Expected cases Log likelihood ratio Relative risk p-value
2004–05 to 2008–09
 Most likely cluster 3 49 22.69 11.45 2.17 0.010
  2nd 109 2599 1605.02 335.21 1.90 0.001
  3rd 22 465 278.70 53.89 1.71 0.001
 Least likely cluster 3 142 87.66 14.33 1.63 0.001
2009–10 to 2013–14
 Most likely cluster 1 94 55.61 10.99 1.69 0.020
  2nd 14 1015 635.27 99.99 1.63 0.001
  3rd 2 201 127.29 18.26 1.59 0.001
  4th 13 696 487.26 40.64 1.45 0.001
  5th 121 4526 3452.59 191.41 1.41 0.001
  6th 10 434 312.59 21.42 1.40 0.001
 Least likely cluster 13 527 430.18 10.42 1.23 0.033