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. 2013 Jul 18;21(1):59. doi: 10.1186/2008-2231-21-59

Table 4.

The mean number of analgesics used during 7 postoperative days in study and control groups

Day Green tea
 Placebo
 P-value
Mean SD Mean SD
1
 2.14
 0.41
 2.77
 0.78
 < 0.001
2
 0.65
 0.69
 1.81
 0.66
 < 0.001
3
 0.37
 0.49
 0.93
 0.59
 0.001
4
 0.05
 0.21
 0.32
 0.47
 0.002
5
 0.00
 0.00
 0.09
 0.29
 0.041
6
 0.00
 0.00
 0.02
 0.15
 0.323
7 0.00 0.00 0.02 0.15 0.323