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Table 3 Glycaemic Index of food recorded in food diaries from all subjects throughout the 6 month study

From: Evaluating compliance to a low glycaemic index (GI) diet in women with polycystic ovary syndrome (PCOS)

  Women Randomised to 600 kcal deficit low GI diet No. (%) Women Randomised to 600 kcal deficit healthy eating diet No. (%)
Total No. Items 1457 1566
Items with GI value present (from international database/assigned zero) 1251 (85.9%) 1358 (86.7%)
Classification of foods*   
Low GI (55 or less) 889 (61.0%) 919 (58.7%)
Medium GI (56-69) 299 (20.5%) 249 (15.9%)
High GI (70+) 63 (4.3%) 190 (12.1%)
No value 206 (14.1%) 208 (13.3%)
Mean GI** 33.67 36.91
Confidence Interval 32.21-35.14 35.42-38.41
Standard deviation of mean 26.48 28.17
Median 38 46
  1. *Significant difference using Chi squared (p < 0.0005)
  2. **Significant difference using independent t-test (p = 0.003)