Documentation Example 5 for PROC PHREG
/****************************************************************/
/* S A S S A M P L E L I B R A R Y */
/* */
/* NAME: PHREX5 */
/* TITLE: Documentation Example 5 for PROC PHREG */
/* PRODUCT: STAT */
/* SYSTEM: ALL */
/* KEYS: Conditional Logistic Regression, n:m Matched Sets */
/* PROCS: PHREG */
/* DATA: Krall et al (1975), "A Step-up Procedure for */
/* Selecting Variables Associated with Survival," */
/* Biometrics, 31, pp 49-51 */
/* SUPPORT: sasycs */
/* REF: SAS/STAT User's Guide, PROC PHREG Chapter */
/* MISC: */
/****************************************************************/
data LBW;
input id Age Low LWT Smoke HT UI @@;
Time=2-Low;
datalines;
25 16 1 130 0 0 0 143 16 0 110 0 0 0
166 16 0 112 0 0 0 167 16 0 135 1 0 0
189 16 0 135 1 0 0 206 16 0 170 0 0 0
216 16 0 95 0 0 0 37 17 1 130 1 0 1
45 17 1 110 1 0 0 68 17 1 120 1 0 0
71 17 1 120 0 0 0 83 17 1 142 0 1 0
93 17 0 103 0 0 0 113 17 0 122 1 0 0
116 17 0 113 0 0 0 117 17 0 113 0 0 0
147 17 0 119 0 0 0 148 17 0 119 0 0 0
180 17 0 120 1 0 0 49 18 1 148 0 0 0
50 18 1 110 1 0 0 89 18 0 107 1 0 1
100 18 0 100 1 0 0 101 18 0 100 1 0 0
132 18 0 90 1 0 1 133 18 0 90 1 0 1
168 18 0 229 0 0 0 205 18 0 120 1 0 0
208 18 0 120 0 0 0 23 19 1 91 1 0 1
33 19 1 102 0 0 0 34 19 1 112 1 0 1
85 19 0 182 0 0 1 96 19 0 95 0 0 0
97 19 0 150 0 0 0 124 19 0 138 1 0 0
129 19 0 189 0 0 0 135 19 0 132 0 0 0
142 19 0 115 0 0 0 181 19 0 105 0 0 0
187 19 0 235 1 1 0 192 19 0 147 1 0 0
193 19 0 147 1 0 0 197 19 0 184 1 1 0
224 19 0 120 1 0 0 27 20 1 150 1 0 0
31 20 1 125 0 0 1 40 20 1 120 1 0 0
44 20 1 80 1 0 1 47 20 1 109 0 0 0
51 20 1 121 1 0 1 60 20 1 122 1 0 0
76 20 1 105 0 0 0 87 20 0 105 1 0 0
104 20 0 120 0 0 1 146 20 0 103 0 0 0
155 20 0 169 0 0 1 160 20 0 141 0 0 1
172 20 0 121 1 0 0 177 20 0 127 0 0 0
201 20 0 120 0 0 0 211 20 0 170 1 0 0
217 20 0 158 0 0 0 20 21 1 165 1 1 0
28 21 1 200 0 0 1 30 21 1 103 0 0 0
52 21 1 100 0 0 0 84 21 1 130 1 1 0
88 21 0 108 1 0 1 91 21 0 124 0 0 0
128 21 0 185 1 0 0 131 21 0 160 0 0 0
144 21 0 110 1 0 1 186 21 0 134 0 0 0
219 21 0 115 0 0 0 42 22 1 130 1 0 1
67 22 1 130 1 0 0 92 22 0 118 0 0 0
98 22 0 95 0 1 0 137 22 0 85 1 0 0
138 22 0 120 0 1 0 140 22 0 130 1 0 0
161 22 0 158 0 0 0 162 22 0 112 1 0 0
174 22 0 131 0 0 0 184 22 0 125 0 0 0
204 22 0 169 0 0 0 220 22 0 129 0 0 0
17 23 1 97 0 0 1 59 23 1 187 1 0 0
63 23 1 120 0 0 0 69 23 1 110 1 0 0
82 23 1 94 1 0 0 130 23 0 130 0 0 0
139 23 0 128 0 0 0 149 23 0 119 0 0 0
164 23 0 115 1 0 0 173 23 0 190 0 0 0
179 23 0 123 0 0 0 182 23 0 130 0 0 0
200 23 0 110 0 0 0 18 24 1 128 0 0 0
19 24 1 132 0 1 0 29 24 1 155 1 0 0
36 24 1 138 0 0 0 61 24 1 105 1 0 0
118 24 0 90 1 0 0 136 24 0 115 0 0 0
150 24 0 110 0 0 0 156 24 0 115 0 0 0
185 24 0 133 0 0 0 196 24 0 110 0 0 0
199 24 0 110 0 0 0 225 24 0 116 0 0 0
13 25 1 105 0 1 0 15 25 1 85 0 0 1
24 25 1 115 0 0 0 26 25 1 92 1 0 0
32 25 1 89 0 0 0 46 25 1 105 0 0 0
103 25 0 118 1 0 0 111 25 0 120 0 0 1
120 25 0 155 0 0 0 121 25 0 125 0 0 0
169 25 0 140 0 0 0 188 25 0 95 1 0 1
202 25 0 241 0 1 0 215 25 0 120 0 0 0
221 25 0 130 0 0 0 35 26 1 117 1 0 0
54 26 1 96 0 0 0 75 26 1 154 0 1 0
77 26 1 190 1 0 0 95 26 0 113 1 0 0
115 26 0 168 1 0 0 154 26 0 133 1 0 0
218 26 0 160 0 0 0 16 27 1 150 0 0 0
43 27 1 130 0 0 1 125 27 0 124 1 0 0
4 28 1 120 1 0 1 79 28 1 95 1 0 0
105 28 0 120 1 0 0 109 28 0 120 0 0 0
112 28 0 167 0 0 0 151 28 0 140 0 0 0
159 28 0 250 1 0 0 212 28 0 134 0 0 0
214 28 0 130 0 0 0 10 29 1 130 0 0 1
94 29 0 123 1 0 0 114 29 0 150 0 0 0
123 29 0 140 1 0 0 190 29 0 135 0 0 0
191 29 0 154 0 0 0 209 29 0 130 1 0 0
65 30 1 142 1 0 0 99 30 0 107 0 0 1
141 30 0 95 1 0 0 145 30 0 153 0 0 0
176 30 0 110 0 0 0 195 30 0 137 0 0 0
203 30 0 112 0 0 0 56 31 1 102 1 0 0
107 31 0 100 0 0 1 126 31 0 215 1 0 0
163 31 0 150 1 0 0 222 31 0 120 0 0 0
22 32 1 105 1 0 0 106 32 0 121 0 0 0
134 32 0 132 0 0 0 170 32 0 134 1 0 0
175 32 0 170 0 0 0 207 32 0 186 0 0 0
;
proc phreg data=LBW;
model Time*Low(0)= LWT Smoke HT UI / ties=discrete;
strata Age;
run;
