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Table 2 Raw SF-36 scores before and after colonoscopy

From: Colonoscopic screening for colorectal cancer improves quality of life measures: a population-based screening study

SF-36 Scale Mean Score BEFORE Mean Score AFTER N Difference of means (AFTER-BEFORE) SD P value
PF: physical functioning 80.2 78.6 225 -1.6 15.5 0.13
BP: bodily pain 75.6 77.3 224 +1.7 21.6 0.23
RP: role limitations due to physical condition 82.6 85.2 219 +2.5 33.5 0.27
GH: general health perceptions 73.3 72.7 223 -0.5 12.2 0.51
SF: social functioning 88.1 88.5 223 +0.4 18.9 0.76
VT: vitality 64.6 66.5 224 +1.9 14.2 0.04*
RE: role limitations due to emotions 88.6 92.9 222 +4.4 28.8 0.03*
MH: mental health 78.0 79.9 224 +1.9 12.8 0.03*
  1. SD = standard deviation; P value associated with two-tailed paired t test (*P < 0.05)