Efficacy of intradiscal autologous platelet-rich plasma injection in chronic lumbar disc prolapse: A quasi-experimental study

Table 1 Demographic characteristics of the study participants, n (%)

Demographic characteristics		PRP group (n = 17)	Physiotherapy group (n = 22)	P value
Age, mean ± SD		28.9 ± 8.6	31.8 ± 7.8	0.271
Sex	Male	16 (94.1)	19 (86.4)	0.422
	Female	1 (5.9)	3 (13.6)
Occupation	Labourer	6 (35.3)	4 (18.2)	0.462
	Farmer	2 (11.8)	3 (13.6)
	Factory worker	2 (11.8)	1 (4.5)
	Student	3 (17.6)	3 (13.6)
	Others	4 (23.5)	11 (50)
Level of disc disease	L3-L4	1 (5.9)	0 (0.0)	0.3852
	L4-L5	6 (35.3)	11 (50.0)
	L5-S1	10 (58.8)	11 (50.0)
Location of disc herniation	Left paracentral	4 (23.5)	3 (13.6)	0.6012
	Posterocentral	9 (52.9)	15 (68.2)
	Right paracentral	4 (23.5)	4 (18.2)

¹t-test.

²χ² test.

PRP: Platelet-rich plasma.