Case Control Study
Copyright ©The Author(s) 2020.
World J Clin Cases. Jun 6, 2020; 8(11): 2137-2143
Published online Jun 6, 2020. doi: 10.12998/wjcc.v8.i11.2137
Table 1 Analgesic efficacy in the two groups, n (%)
GroupExcellentVery goodGoodPoorAnalgesia graded as “excellent or very good”
Observation2842032 (94.12)
Control17412121 (61.76)
χ2----30.452
P value----< 0.05