Table 5. Summary of data analysis for the effectiveness of the three treatment arms with use of separation test-a in the evening primrose group (n=31).

"Mean change (SD)" represents the mean change in the respective variable along with the standard deviation. "Δ/2" indicates half of the calculated standard deviation effect. The "mean difference" displays the average change observed in each variable across the treatment group. "Indication" describes whether there was an improvement or no response in each variable based on the treatment received.

Variable	Mean Change (SD)	Δ/2	Mean Difference	Indication
Days when bothered by pain	-0.40 (0.50)	0.25	-0.15	Improve
Worst pain last month	-1.30 (1.60)	0.80	-0.50	Improve
Average pain last month	-0.90 (1.10)	0.55	-0.35	Improve
Work schedule	0.15 (0.25)	0.13	0.02	Improve
Sleep pattern	-0.08 (0.18)	0.09	-0.01	Improve
Sexual activity	0.08 (0.12)	0.06	0.02	Improve
Use of prescription drug	0.25 (0.35)	0.20	0.05	Improve