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. Author manuscript; available in PMC: 2016 Nov 30.
Published in final edited form as: Stat Med. 2015 Jul 14;34(27):3590–3605. doi: 10.1002/sim.6577

Table A1.

Comparison of empirical with model-based estimates of the correlation between repeat biomarker measurements as a function of the time between the repeats: protein density in men and women

Empirical Model-based
Gender Difference in Time Periods Total no. individuals Estimated correlation 95% CI lower limit 95% CI upper limit Estimated Correlation
Men 0 500 0.591 0.531 0.645 0.626
1 19 0.604 0.207 0.830 0.554
2 16 0.706 0.323 0.890 0.554
3 12 0.831 0.490 0.951 0.554
4 9 0.880 0.521 0.975 0.554
5 32 0530 0.222 0.741 0.554
6 0 - - - 0.554
7 8 0.480 −0.339 0.885 0.554
Women 0 550 0.604 0.548 0.654 0.602
1 109 0.367 0.192 0.519 0.477
2 126 0.217 0.043 0.377 0.377
3 20 0.120 −0.341 0.534 0.299
4 11 0.772 0.321 0.938 0.237
5 20 0.483 0.051 0.762 0.188
6 1 - - - 0.149
7 12 −0.259 −0.725 0.370 0.118