Table 5.

Classification of pain index based on diary pain intensity rating and analgesic intake

Pain response	Pain index	Diary pain rating change from baseline	Analgesic intake compared with baseline
Complete	1	Decrease ≥ 90%	Stable or reduced
Marked	2	Decrease ≥ 50% to < 90%	Stable or reduced
Moderate	3	Decrease > 33% to < 50%	Stable or reduced
Minimal	4	Decrease ≥ 20% or increase < 33%	Stable
None	5	Decrease < 20% or increase < 20%	Stable
Pain progression	6	Increase ≥ 20%	Stable or increased
		Decrease < 20% or increase < 20%	Increased
		Decrease ≥ 20%	Increased