Table 2: The prehospital status of patients.

Characteristics TotalNLTXPlaceboP value

Pre-hospital Apnea
No apnea43 (79.6%)23 (85.2%)20 (74.1%)0.38
One episode8 (14.8%)2 (7.4%)6 (22.2%)
Two episodes3 (5.6%)2 (7.4%)1 (3.7%)
Bradypnea27 (50.0%)11 (40.7%)16 (59.3%)0.17*
Naloxone doses (mg)
Mean ± SD 0.53
Symptoms
Nausea & vomiting23 (42.6%)13 (48.1%)10 (37.0%)0.41*
Dizziness14 (25.9%)7 (25.9%)7 (25.9%)>0.99*
Headache3 (5.6%)1 (3.7%)2 (7.4%)>0.99**
Seizure3 (5.6%)2 (7.4%)1 (3.7%)>0.99**
Weakness5 (9.3%)3 (11.1%)2 (7.4%)>0.99**
Fall down2 (3.7%)0 (0.0%)2 (7.4%)0.49**
Pruritus2 (3.7%)0 (0.0%)2 (7.4%)0.49**

Student’s t-test. Mann-Whitney U test. *Chi-Square test. **Fisher’s exact test.