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

Table 5 Difference of mean Functional Rating Index score at different time intervals between the platelet-rich plasma group and the physiotherapy group - pairwise comparisons

Time (I)	Time (J)	Mean difference (I-J)	SE	Sig.1 (P value)	95%CI for difference1
					Lower	Upper
Baseline	3 weeks	12.911a	2.294	< 0.05	7.159	18.663
	6 weeks	17.182a	2.697	< 0.05	10.418	23.947
3 weeks	Baseline	-12.911a	2.294	< 0.05	-18.663	-7.159
	6 weeks	4.271a	1.433	< 0.05	0.678	7.865
6 weeks	Baseline	-17.182a	2.697	< 0.05	-23.947	-10.418
	3 weeks	-4.271a	1.433	< 0.05	-7.865	-0.678

^aP < 0.05, the mean difference is significant.

¹Adjustment for multiple comparisons: Bonferroni.

Based on estimated marginal means. 95%CI: 95% confidence interval.