Table 3. .

Percentages and Discomfort Ratings of Percussion Pain for the Ibuprofen (I) and Ibuprofen/Acetaminophen (IA) Groups by Day*

	Study Group	None, % #	Mild, % #	Moderate, % #	Severe, % #	Mean, mm ± SD	Difference in Means, mm ± SD	P Value for Mean
Day 1	I (n = 49)	10% 5	29% 14	49% 24	12% 6	63 ± 41	3 ± 41	1.000
	IA (n = 53)	6% 3	36% 19	53% 28	6% 3	60 ± 42
Day 2	I (n = 36)	11% 4	33% 12	42% 15	14% 5	60 ± 39	10 ± 38	1.000
	IA (n = 41)	10% 4	39% 16	44% 18	7% 3	50 ± 37
Day 3	I (n = 30)	10% 3	40% 12	43% 13	7% 2	40 ± 34	7 ± 34	1.000
	IA (n = 37)	16% 6	40% 15	40% 15	3% 1	47 ± 35
Day 4	I (n = 29)	17% 5	48% 14	31% 9	3% 1	26 ± 28	16 ± 33	1.000
	IA (n = 35)	23% 8	40% 14	31% 11	6% 2	42 ± 38

^*Patients requiring opioids were excluded on days 2–4.