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

Table 3 Difference of mean Visual Analogue Scale 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	1.564a	0.256	< 0.05	0.922	2.206
	6 weeks	1.989a	0.247	< 0.05	1.371	2.608
3 weeks	Baseline	-1.564a	0.256	< 0.05	-2.206	-0.922
	6 weeks	0.425	0.188	0.089	-0.047	0.897
6 weeks	Baseline	-1.989a	0.247	< 0.05	-2.608	-1.371
	3 weeks	-0.425	0.188	0.089	-0.897	0.047

^aP < 0.05, the mean difference is significant.

¹Adjustment for multiple comparisons: Bonferroni.

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