ÿWPCà  M3²ãºcl·ã ñÉ'4ü§gÖè·¢&šÀ?ù^¥Dvà·Ìp×JÈ} ß•ÍR#Fö²”ïM5S€@å雕ÔYÚ=¡ÚÉE‚~ôôKméêh®ûVfõô""·®¢•ÿX^Ú—£·”/PþPN›,´>‘)oY¼?Ù8§9þX8òK ®0ì|¿0ø‹ï¼Y³ Ï­O þG 50›Ú˜ËBz«öWñ e3×ýLpBÝ<¼‡Ü©ýhT§”*\(…Ôür†5 å;8å“`é7ïòºú ØtÕbîk‰;0øÌa™=­ÕÍ]È.+>D²l±ö ÍÆ–W,ª½ó!Ÿ_-PåÚ<à1å³Í¶QCò5§mÓH‰+VÒÙó’‘´©&ÁîìwŽhQÙÙ8x¹ÙxÝYìÖß9<q˜¶•¢WµJ¶µëj´èÖ)&3îBšž×x#ŸZ°™\aLö¨R–QTš+4(8šÐ¸~C\w@ZÃc•ü>c­v„)W¾» _*Ý™;ðïVs,l(™šU&£ôŠ›º–-ò1$¿ê®¿Áê[ÂåqT{øB½‚:úøådöÒ×­›±œ&eÍÛ¡xÀÚ¢…°!dÙ†¹¸> 0(d 0CŒ 0CÏ 03 BE B*b BŒ B© BÆ BãU2 %2Æ8 D+þ AO)Æx D5> AMs ÆÀ D5† AI» 4 U. UBF ˆ UN— — — — — — — — — — — — 0Då 0K) D3t t t t t t t t t t t t t t t t t t Ƨ § 0Dm D/± ($¡¡(ÿÿ$òòÚ  ÚÚ  Úóó(ÿÿ$òòÚ  ÚÚ  Úóó( ÿÿ$Ó  Ó d&ÿÿ0 d dþÿ dýÿ düÿP Pdûÿ   d< Œ p`+‹CourierTT X Level 1 Level 2 Level 3 Level 4 Level 5'ÈÈÈÈdxd:&<=Cþÿ<< Cÿÿ Level 1 Level 2 Level 3 Level 4 Level 5)ÈÈÈÈdd &'(A<< Cÿÿ Level 1 Level 2 Level 3 Level 4 Level 5)ÈÈÈÈddAüÿ°°Cÿÿ8o¬"Â< Œ p`‹ArialTT< Œ p`‹*Times New RomanTT3|xÍ(ÈhH  Z ‹6Times New Roman Regular(3¯$££Ý ƒ!ÝÝ  Ý( ±þ$’’ò òFigure€Ú  Ú1Ú  Úó ó'ÿÿdxdƒLevel 1Level 2Level 3Level 4Level 5($$””ò òÚ  Ú1Ú  Úó ó '÷ÿ dxdѰñÑѰñÑÑTRY03Ø' Letter3Ø'3Ø' Letterÿ3Ø'TÑÓ*°,X‚X4` ˜X°œX*ÓÝ ƒÿÝÝ  ÝÔ€XÓEXX XÔÔ€%[%XXÓEÔREFERENCESÐ ° ÐÔ€%^ž%%%[ÔÌà0  àà ° àAlexander,€K.€L.,€Entwisle,€D.€R.,€and€Horsey,€C.€S.€(1997).€From€First€Grade€Forward:€EarlyÏFoundations€of€High€School€Dropout.€€òòSociology€of€Educationóó€70(2):€87„107.Ð>Ž(#(# Ðà0  àà ° àAllen,€D.,€(1994).€The€Iliad€and€the€Odyssey€of€Student€Attrition.€New€Orleans,€LA.€Paper€presented€atÏthe€34th€Annual€Forum€of€the€Association€for€Institutional€Research.Ð (#(# Ðà0  àà ° àAllison,€P.€D.€(1984).€Event€History€Analysis:€Regression€for€Longitudinal€Event€Data.€òòQuantitativeÐ Ì  ÐApplications€in€the€Social€Sciences:€A€Sage€University€Paper.óó€Newbury€Park,€CA:€SageÐ ¦ ö ÐPublications€Inc.€46:€87€pp.Ð (#(# Ðà0  àà ° àAllison,€P.€D.€(1995).€òòSurvival€Analysis€Using€the€SASòòððóó€System:€A€Practical€Guide.€óóCary,€NC:€SASÐ Z ª  ÐInstitute€Inc.,€292€pp.Ð (#(# Ðà0  àà ° àAnderson,€D.€K.,€(1996).€GED€Certification€After€Dropout:€Timing€and€Social€Correlates.€New€York,ÏNY.€€Paper€presented€at€the€Annual€Meeting€of€the€American€Sociological€Association.Ð (#(# Ðà0  àà ° àBergman,€M.€I.,€and€Sudmant,€W.€(1994).€A€Cross„National€and€Cross„Institutional€Examination€ofÏCompletion€Rates€and€Times€to€Degree€for€Research€Doctorates:€€Using€Survival€Modeling€toÏEnhance€the€Understanding€of€Disciplinary€Influences€in€Doctoral€Education.€New€Orleans,€LA:ÏPaper€presented€at€the€34th€Annual€Forum€of€the€Association€for€Institutional€Research.Ð (#(# Ðà0  àà ° àBlossfeld,€H„P.,€and€Hamerle,€A.,€(1990).€Unobserved€Heterogeneity€in€Hazard€Rate€Models:€A€Test€andÏan€Illustration€from€a€Study€of€Career€Mobility.€€€òòEvent€History€Analysis€in€Life€Course€ResearchÐ T Ð/€Edited€by€Mayer,€K.€U.,€and€Tuma,€N.€B.óó€Madison,€WI:€The€University€of€Wisconsin€Press.Ð Þ. 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