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Table 8 Incidences with potentially proper missing and/or invalid values

From: Data missingness in the Michigan NEMSIS (MI-EMSIS) dataset: a mixed-methods study

  Year
Incident’s patient disposition (N %) 2010 2011 2012 2013 2014 2015
Cancelled 28,626 (2.9) 47,378 (3.7) 56,923 (4.2) 62,400 (4.2) 70,014 (4.5) 71,108 (4.4)
No patient found 10,538 (1.1) 14,296 (1.1) 17,194 (1.3) 21,057 (1.4) 23,249 (1.5) 24,123 (1.5)
No treatment required 20,833 (2.1) 26,629 (2.1) 27,135 (2.0) 28,651 (1.9) 36,789 (2.4) 45,967 (2.9)
Standby only—no patient contacts 1993 (0.2) 2555 (0.2) 2612 (0.2) 2180 (0.1) 2550 (0.2) 3696 (0.2)
Total 61,990 (6.27) 90,858 (7.01) 103,864 (7.64) 114,288 (7.64) 132,602 (8.51) 144,894 (9.04)