Table 2.

Comparison of pain scores in each group at day 0 and at seven consecutive postoperative days

Pain scores	Total (N = 26)	Collagen group (n = 13)	Bio-Oss group (n = 13)	P value between groups*
Day 0				1.00
Mean (SD)	0 (0)	0 (0)	0 (0)
Range (Min–Max)	(0.0–0.0)	(0.0–0.0)	(0.0–0.0)
Day 1				0.268
Mean (SD)	4.20 (2.15)	3.74 (1.77)	4.67 (2.47)
Range (Min–Max)	(1.00–9.67)	(2.00–7.33)	(1.00–9.67)
Day 2				0.589
Mean (SD)	3.78 (1.79)	3.51 (1.45)	4.05 (2.10)
Range (Min–Max)	(1.33–8.33)	(1.67–7.33)	(1.33–8.33)
Day 3				0.171
Mean (SD)	2.93 (1.88)	2.41 (1.09)	3.46 (2.36)
Range (Min–Max)	(1.00–9.67)	(1.33–4.33)	(1.00–9.67)
Day 4				0.638
Mean (SD)	2.24 (1.11)	2.15 (0.78)	2.33 (1.40)
Range (Min–Max)	(1.00–5.00)	(1.33–4.00)	(1.00–5.00)
Day 5				0.004
Mean (SD)	1.44 (0.61)	1.15 (0.29)	1.74 (0.71)
Range (Min–Max)	(1.00–3.33)	(1.00–2.00)	(1.00–3.33)
Day 6				0.286
Mean (SD)	1.05 (0.12)	1.02 (0.09)	1.07 (0.14)
Range (Min–Max)	(1.00–3.33)	(1.00–1.33)	(1.00–1.33)
Day 7				0.317
Mean (SD)	1.08 (0.39)	1.15 (0.55)	1 (0)
Range (Min–Max)	(1.00–3.00)	(1.00–3.00)	(1.00–1.00)
P value within each group†	7.44E−37	2.38E−17	2.85E−15
Total pain score				0.397
Mean (SD)	16.74 (6.90)	15.15 (4.49)	18.33 (8.59)
Range (Min–Max)	(7.66–33.66)	(9.66–23.00)	(7.66–33.66)

P value < 0.05 is considered significant

SD standard deviation; Min minimum; Max maximum; N frequency

*Mann–Whitney test

^†Friedman test