COMPARISON of three treatments - YOURNAME 1 The data as SAS sees it 11:49 Tuesday, October 4, 2005 Obs group zval days status 1 AA 4 4 0 2 AA 5 5 0 3 AA 9 9 0 4 AA 10 10 0 5 AA 12 12 0 6 AA 13 13 0 7 AA 10 10 0 8 AA 23 23 0 9 AA 28 28 0 10 AA 28 28 0 11 AA 28 28 0 12 AA 29 29 0 13 AA 31 31 0 14 AA 32 32 0 15 AA 37 37 0 16 AA 41 41 0 17 AA 41 41 0 18 AA 57 57 0 19 AA 62 62 0 20 AA 74 74 0 21 AA 100 100 0 22 AA 139 139 0 23 AA -20 20 1 24 AA -258 258 1 25 AA -269 269 1 26 BB 8 8 0 27 BB 10 10 0 28 BB 10 10 0 29 BB 12 12 0 30 BB 14 14 0 31 BB 20 20 0 32 BB 48 48 0 33 BB 70 70 0 34 BB 75 75 0 35 BB 99 99 0 36 BB 103 103 0 37 BB 162 162 0 38 BB 169 169 0 39 BB 195 195 0 40 BB 230 230 0 41 BB -161 161 1 42 BB -199 199 1 43 BB -217 217 1 44 BB -245 245 1 45 CC 8 8 0 46 CC 10 10 0 47 CC 11 11 0 48 CC 23 23 0 49 CC 25 25 0 50 CC 25 25 0 51 CC 28 28 0 52 CC 28 28 0 53 CC 31 31 0 54 CC 31 31 0 55 CC 40 40 0 COMPARISON of three treatments - YOURNAME 2 The data as SAS sees it 11:49 Tuesday, October 4, 2005 Obs group zval days status 56 CC 48 48 0 57 CC 89 89 0 58 CC 124 124 0 59 CC 143 143 0 60 CC -12 12 1 61 CC -159 159 1 62 CC -190 190 1 63 CC -196 196 1 64 CC -197 197 1 65 CC -205 205 1 66 CC -219 219 1 COMPARISON of three treatments - YOURNAME 3 Graphs and tests using Proc Lifetest 11:49 Tuesday, October 4, 2005 The LIFETEST Procedure Summary of the Number of Censored and Uncensored Values Percent Stratum group Total Failed Censored Censored 1 AA 25 22 3 12.00 2 BB 19 15 4 21.05 3 CC 22 15 7 31.82 --------------------------------------------------------------- Total 66 52 14 21.21 COMPARISON of three treatments - YOURNAME 4 Graphs and tests using Proc Lifetest 11:49 Tuesday, October 4, 2005 The LIFETEST Procedure Survival Function Estimates SDF | | | | | | 1.0 +*A* | A| | |* S | A*C u | A| r | |C--C v | *B C i 0.8 + A* | v | A | a | *-B| l | A--*C | BAA----B D | | | i | * B----B s 0.6 + | | t | | BB r | A | i | *--C B-----B b | | C-C BB u | AA | | t | AA C--------C B-------------B i 0.4 + | | | o | AA C--------C B-B n | | C---C | | | | B-----B F | A---A C | u | AA | n | | B-------B c 0.2 + A--A | t | A-----A | i | | | o | A--------A B n | A | | 0.0 + | | | | | | -+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+- 0 25 50 75 100 125 150 175 200 225 250 275 days COMPARISON of three treatments - YOURNAME 5 Graphs and tests using Proc Lifetest 11:49 Tuesday, October 4, 2005 The LIFETEST Procedure Censored Observations Strata C + C C C* C C B + B B B B A + A A A ---+----+----+----+----+----+----+----+----+----+----+----+-- 0 25 50 75 100 125 150 175 200 225 250 275 days COMPARISON of three treatments - YOURNAME 6 Graphs and tests using Proc Lifetest 11:49 Tuesday, October 4, 2005 The LIFETEST Procedure -Log(Survival Function) Estimates -LOG SDF | | | | | | 2.5 + A | ++ | + | + | ++ | + B | A + 2.0 + + + | ++ + | + + N | A + e | + + g | + + a | A + t 1.5 + + + i | + B v | A ++ e | ++ ++ | A +C B L | + ++ + o | + +C + g 1.0 + A ++++ ++B | + ++++C+ ++++++ S | A C+++ B++ D | A + + F | ++C ++B | * B++ | A +B 0.5 + * ++ | ++ ++B | A**++ | AB + | * +C | *+ | A* 0.0 + * | | | | | | ----+----+----+----+----+----+----+----+----+----+----+----+---- 0 25 50 75 100 125 150 175 200 225 250 275 days COMPARISON of three treatments - YOURNAME 7 Graphs and tests using Proc Lifetest 11:49 Tuesday, October 4, 2005 The LIFETEST Procedure Legend for Strata Stratum Symbol group 1 A AA 2 B BB 3 C CC COMPARISON of three treatments - YOURNAME 8 Graphs and tests using Proc Lifetest 11:49 Tuesday, October 4, 2005 The LIFETEST Procedure Testing Homogeneity of Survival Curves for days over Strata Rank Statistics group Log-Rank Wilcoxon AA 6.6349 273.00 BB -3.6934 -170.00 CC -2.9415 -103.00 Covariance Matrix for the Log-Rank Statistics group AA BB CC AA 10.1552 -5.1264 -5.0289 BB -5.1264 11.4176 -6.2913 CC -5.0289 -6.2913 11.3201 Covariance Matrix for the Wilcoxon Statistics group AA BB CC AA 20330.0 -9556.8 -10773.2 BB -9556.8 19518.0 -9961.2 CC -10773.2 -9961.2 20734.4 Test of Equality over Strata Pr > Test Chi-Square DF Chi-Square Log-Rank 4.3484 2 0.1137 Wilcoxon 3.7815 2 0.1510 -2Log(LR) 6.6493 2 0.0360