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. Author manuscript; available in PMC: 2013 Apr 10.
Published in final edited form as: Diabetes Educ. 2008 Sep-Oct;34(5):854–865. doi: 10.1177/0145721708323642

Table 4.

Mean Change Scores for Outcomes

Post-Baseline Change Mean (SD)a
t Test of
Change Scores
95% Confidence
Interval
Group Education Individual Education P Value of Group Difference
HbA1C −0.32 (0.98) −0.24 (0.38) .855 (−0.89, 0.75)
Self-efficacy 3.58 (5.43) −1.13 (7.12) .111 (−1.18, 10.6)
Self-care activities
 General diet 1.77 (3.56) 1.0 (3.55) .637 (−2.59, 4.13)
 Specific diet 1.77 (3.39) 0.5 (3.55) .423 (−1.98, 4.52)
 Carbohydrate spacing 2.27 (3.58) −.14 (1.68) .073 (−0.25, 5.08)
 Exercise 1.0 (3.7) 1.38 (4.17) .832 (−4.02, 3.27)
 Blood glucose testing 3.62 (4.31) 1.63 (4.87) .34 (−2.27, 6.25)
 Foot care (examination) 2.15 (3.24) 1.88 (3.72) .858 (−2.94, 3.5)
 Comprehensive foot care
  (examination and hygiene)
3.64 (5.92) 0.38 (3.7) .189 (−1.76, 8.29)
 Medicationb
  administration −0.44 (1.33) −1.0 (2.24) b (−1.5, 2.61)
 Smokingc −0.85 (3.05) 0 (0) c (−3.13, 1.43)
a

Sample sizes vary, ranging from 18 to 21, due to missing values for some of the outcomes at either baseline or postintervention.

b

Change scores for medication administration are negligible with 80%-88.9% no change.

c

Change scores for smoking are negligible with 92.3%-100% with no change.