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Table 6 Hydros-TA vs. Hydros: Observed mean reduction in WOMAC A (Pain) score*

From: Safety and performance of Hydros and Hydros-TA for knee osteoarthritis: a prospective, multicenter, randomized, double-blind feasibility trial

Time point Hydros n = 32 Hydros-TA n = 34 Difference p-value
  Mean reduction (mm) from baseline [LSMeans(SE)] Estimated between group difference [LSMeans(SE)]  
Baseline 68.1 69.4 NA NA
2 weeks −23.3 (5.6) −35.6 (5.2) −12.4 0.04
6 weeks −32.4 (5.6) −33.4 (5.2) −1.1 0.86
13 weeks −33.9 (5.6) −33.3 (5.2) 0.6 0.93
26 weeks −32.4 (5.6) −35.2 (5.3) −2.8 0.65
Overall −30.5 (5.1) −34.4 (4.7) −3.9 0.45
  1. *For intent-to-treat population observed at landmark time points.