Skip to main content

Table 3 Subgroup analysis of follow-up time of VAS score

From: Valgus knee bracing may have no long-term effect on pain improvement and functional activity in patients with knee osteoarthritis: a meta-analysis of randomized trials

Subgroup follow-up time Results of subgroup analysis
Number of studies MD* value (95%CI) P value I2/%
aa < 24 weeks 4 [21,22,23,24] − 0.41 [− 0.78, − 0.05] 0.03 35%
24 weeks < aa < 48 weeks 2 [17, 25] − 0.20 [− 0.49, 0.09] 0.17 7%
aa > 48 weeks 1 [18] 0.64 [0.32, 0.97] 0.0001
  1. MD mean difference
  2. aa follow-up time