STATISTICS IN MEDICINEStatist. Med. 2001; 20:655

CORRECTION

The following are corrections to Kim, H-J, Fay MP, Feuer EJ, Midthune DN. Permutationtests for joinpoint regression with applications to cancer rates. Statistics in Medicine 2000;19:335{351:

1. In Table I, for each set of (1; 2); (1 = 80; 90, and 2 = 0:0001; 0:0002; 0:0005 and0.0010), Mean estimated jp SE for (apc1; apc2)= (3; 2:4) should be exchanged withmean estimated jp SE for (apc1; apc2)= (3; 1:5).

2. In Section 2.3, denotes the covariance matrix of the error. For ij of autocorrelateddata with lag 1, the correct form of the ijth element of is ij=2jijj=(1 2).

3. In Section 2.4, the probability of concluding exactly k joinpoints when there is no changeis at most (NJP k +1)=NJP instead of k=NJP. See the twelfth line from the bottom ofthe page.

In addition, the program to t joinpoint regression can be downloaded from the web sitehttp:==www-dccps.ims.nci.nih.gov=SRAB=joinpoint=index.html.

HYUNE-JU KIMDepartment of Mathematics

Syracuse University215 Carnegie Hall

Syracuse, NY 13244-1150U.S.A.

Copyright ? 2001 John Wiley & Sons, Ltd.