Dear R users, If anyone can tell me how to extract the p values from the output of gee? Many thanks in advance. Yu-Kang _________________________________________________________________ §K¶O¸ÕÅ¥ MSN ^»y¾Ç²ß¡G©M¯u¤H¦Ñ®v½u¤W¾Ç^¤å http://www.msn.com.tw/english/