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. Author manuscript; available in PMC: 2012 Jan 4.
Published in final edited form as: J Clin Endocrinol Metab. 2004 May;89(5):2271–2274. doi: 10.1210/jc.2003-032150

Table 1.

Distribution of subjects in quartiles at Draw 2 compared to Draw 1.

Visit 1 Number of Subjects Changing Quartiles [n/total per quartile(%)] Quartile Distribution for IGF-I at Visit 2 (n)
Quartile 1 Quartile 2 Quartile 3 Quartile 4
Quartile 1 n=21 5/21 (24) 16 4 1 0
Quartile 2 n=22 13/22 (59) 8 9 5 0
Quartile 3 n=20 11/20 (55) 1 5 9 5
Quartile 4 n=21 5/21 (24) 0 2 3 16
TOTALS 34/84 (40.5) n=25 n=20 n=18 n=21

IGF-I values of 14 patients (33%) moved from low risk (Quartiles 2 and 3) to high risk quartiles (Quartiles 1 or 4), and ten patients (24%) moved from high risk to low risk quartiles.