Table 3. Intragroup and intergroup comparisons of pain at the test and control sites at baseline and day 7.
| Variables | Site | Duration | Mean±SD | Mean difference | P value | 
|---|---|---|---|---|---|
| Intragroup (pain) | Test | Baseline | 2.90±1.16 | 2.50 | 0.000a) | 
| Day 7 | 0.40±0.60 | ||||
| Control | Baseline | 3.80±1.50 | 3.30 | 0.000a) | |
| Day 7 | 0.50±0.51 | ||||
| Intergroup (pain) | Test | Baseline | 2.90±1.16 | −0.90 | 0.041a) | 
| Control | 3.80±1.15 | ||||
| Test | Day 7 | 0.40±0.60 | −0.10 | 0.574 | |
| Control | 0.50±0.51 | 
SD: standard deviation.
a)P<0.05, statistically significant.