Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
| Systems used | No pain | Mild pain | Moderate pain | Intergroup comparison |
| Self-aspirating syringe (SAS) | 90 | 10 | 0 | SAS vs. CS P=0.06 |
| Conventional syringe (CS) | 80 | 0 | 20 | SAS vs. CCLADS P=0.236 |
| Computer-controlled device (CCLADS) | 100 | 0 | 0 | CS vs. CCLADS P=0.03* |
Mann-Whitney test; * indicates significant at P≤0.05
