Comparison of demographics and length of stay between years
| 2014 | 2015 | 2016 | 2017 | P value | |
| Age | 41±3.0 | 38±2.0 | 40±2.3 | 37±2.4 | 0.78 |
| Gender (% male/female) | 69/31 | 53/47 | 71/29 | 57/43 | 0.27 |
| Total appendicitis cases | 41 | 57 | 58 | 68 | |
| Total number meeting the exclusion criteria | 6 | 10 | 30 | 24 | <0.001 |
| Total number meeting the inclusion criteria | 35 | 47 | 28 | 44 | 1.00 |
| Number of patients staying <24 hours | 14 | 26 | 19 | 42 | <0.001 |
| Percent compliance with eligibility | 40 | 55 | 68 | 95 | |
| Total number of patients staying >24 hours | 27 | 31 | 39 | 26 | 1.00 |
| Percent of patients meeting the inclusion criteria staying >24 hours | 60 | 45 | 32 | 5 | <0.001 |
| Average LOS protocol eligible (hours) | 33±4.0 | 28±2.0 | 26±4.0 | 16±2.0 | <0.001 |
LOS, length of stay.