Table 4

Comparison of the ability of community surveillance in obtaining additional data on suicide compared with the hospital and police records

Non-caseCaseTest statistics
Community surveillance1567Cochran’s Q test 67.9 (p<0.01)
Hospital records6913
Police records6517
Post hoc McNemar’s test statistics
Community surveillanceHospital recordsMcNemar’s χ2 test 37.1 (p<0.01)
Non-caseCase
Non-case69
Case634
Community surveillancePolice recordsMcNemar’s χ2 test 35.6 (p<0.01)
Non-caseCase
Non-case87
Case5710
Hospital recordsPolice recordsMcNemar’s χ2 test 0.67 (p=0.41) NS
Non-caseCase
Non-case5514
Case103

  • NS, Not significant.