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Table 1 Intragroup and intergroup comparisons of PGE 2 levels (ng/mL)

From: Comparison of the effects of ibuprofen and acetaminophen on PGE2 levels in the GCF during orthodontic tooth movement: a human study

  T 0 T 1 T 2 T 3 PGE2levels ( p)
T0vs. T1 T1vs. T2 T2vs. T3 T0vs. T2 T0vs. T3 T1vs. T3
Intragroup           
Group I 31.90 ± 8.88 47.94 ± 10.28 36.99 ± 8.80 32.35 ± 8.96 0.001 0.001 0.001 0.001 0.463 0.001
Group A 32.85 ± 9.09 63.00 ± 9.08 47.70 ± 9.24 33.01 ± 10.42 0.001 0.001 0.001 0.001 0.875 0.001
Group C 34.15 ± 13.59 67.15 ± 16.79 51.60 ± 16.65 35.04 ± 13.83 0.001 0.001 0.001 0.001 0.753 0.001
Intergroup (p)           
I vs.A 0.963 0.0006 0.011 0.490       
I vs.C 0.963 0.002 0.011 0.679       
A vs.C 0.747 0.421 0.520 0.963       
  1. T0 = baseline, T1 = 24 h, T2 = 48 h, T3 = 168 h. I, ibuprofen group; A, acetaminophen group; C, control group.