Table 4

Comparison of the frequency and duration of acute exacerbation
Variable Full analysis set Per-protocol analysis set
Trial n=175 Control n=175 t/Z P Trial n=155 Control n=151 t/Z P
Frequency (times)
Month 0 3.26 ± 2.27 2.94 ± 2.05 1.378 0.169 3.32 ± 2.31 2.95 ± 1.91 1.523 0.129
Month 6 1.02 ± 1.51 1.71 ± 2.14 −3.484 0.001 0.97 ± 1.26 1.48 ± 1.81 −2.888 0.004
Month 18 0.49 ± 0.77 1.09 ± 1.15 −5.689 0.000 0.54 ± 0.75 1.01 ± 0.98 −4.798 0.000
Average frequency 1.01 ± 1.26 1.95 ± 1.88 −5.509 0.000 1.02 ± 1.08 1.76 ± 1.47 −4.963 0.000
Frequency (constituent ratio)
Have exacerbation 101 136 18.5857 0.000 92 121 15.6084 0.000
None exacerbation 76 37 63 30
Duration(days)
Average duration 4.20 ± 5.20 6.22 ± 5.15 −3.653 0.000 4.39 ± 5.24 6.37 ± 5.19 −3.323 0.001

Li et al.

Li et al. BMC Complementary and Alternative Medicine 2012 12:197   doi:10.1186/1472-6882-12-197

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