TABLE 2.

C‐statistics for SHARE models

	Number of cases	Cox regressionC‐statistic (95% CI)	Generalized Cox regressionC‐statistic (95% CI)
In SHARE
10 years	177	0.737 (0.699, 0.773)	0.746 (0.710, 0.785)
8 years	173	0.658 (0.616, 0.699)	0.659 (0.616, 0.698)
6 years	150	0.735 (0.693, 0.773)	0.736 (0.695, 0.775)
4 years	257	0.711 (0.678, 0.74)	0.709 (0.673, 0.74)
In ADAMS
≥6 years	13	0.747 (0.601, 0.917)	0.805 (0.695, 0.942)
6 years	10	0.743 (0.58, 0.924)	0.764 (0.607, 0.952)
5 years	23	0.51 (0.367, 0.652)	0.517 (0.368, 0.659)
4 years	23	0.592 (0.436, 0.768)	0.589 (0.430, 0.775)
3 years	4	1.0	1.0
2 years	16	0.708 (0.558, 0.869)	0.708 (0.555, 0.865)
1 years	23	0.602 (0.45, 0.765)	0.62 (0.468, 0.795)

Abbreviations: ADAMS, Aging, Demographics, and Memory Study; CI, confidence interval; SHARE, Survey of Health, Ageing and Retirement in Europe.