Comparison between CLR communicated by SMS only and those that required manual intervention (telephone calls) during the automated communication pathway periods
| SMS only | Manual intervention | p Value | |
| Total number of CLR in audited periods | 515 | 674 | NS |
| Percentage of CLR communicated directly to physician (%) | 100 | 87.7 | <0.001 |
| Acknowledgement rate (%) | 100 | 100 | NS |
| Median acknowledgement time (min) | 3 | 20 | <0.001 |
| Intervention rate (%) | 93.0 | 93.6 | NS |
| Median intervention time (min) | 16.0 | 23.0 | 0.017 |
CLR, critical laboratory results; NS, not significant; SMS, short messaging system.