Date: Thu, 1 Jul 2004 21:08:06 -0700
Reply-To: Michelle Secic <consult@SECICSTATS.COM>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: Michelle Secic <consult@SECICSTATS.COM>
Organization: http://groups.google.com
Subject: GEE, interpret interaction
Content-Type: text/plain; charset=ISO-8859-1
I'm running proc genmod for binary repeated data.
I've got the following code:
proc genmod data=allt descending;
class id group time;
model col1=group time group*time/d=bin;
repeated subject=id/ within=time type=cs ;
run;
And I can't figure out the output. Can anyone help me???
I just have very general questions I'd like answered, like:
Is there a significant interaction between group and time?
If not, what is the overall estimate of the proportion of
success for each of the two groups?, etc.
Thanks!!!
Response Profile
Ordered Total
Value COL1 Frequency
1 1 1869
2 0 2291
PROC GENMOD is modeling the probability that COL1='1'.
Parameter Information
Parameter Effect group time
Prm1 Intercept
Prm2 group 0
Prm3 group 1
Prm4 time 1
Prm5 time 2
Prm6 time 3
Prm7 time 4
Prm8 time 5
The GENMOD Procedure
Analysis Of GEE Parameter Estimates
Empirical Standard Error Estimates
Standard 95% Confidence
Parameter Estimate Error Limits Z Pr > |Z|
Intercept 1.0986 0.3651 0.3829 1.8143 3.01 0.0026
group 0 -1.5041 0.4873 -2.4592 -0.5489 -3.09 0.0020
group 1 0.0000 0.0000 0.0000 0.0000 . .
time 1 -1.0986 0.5598 -2.1957 -0.0015 -1.96 0.0497
time 2 -0.3677 0.4406 -1.2312 0.4958 -0.83 0.4039
time 3 -0.3677 0.5049 -1.3572 0.6218 -0.73 0.4664
time 4 -0.4796 0.5078 -1.4749 0.5157 -0.94 0.3450
time 5 -0.3677 0.5049 -1.3572 0.6218 -0.73 0.4664
time 6 -0.7963 0.4924 -1.7614 0.1687 -1.62 0.1058
time 7 -0.3677 0.5049 -1.3572 0.6218 -0.73 0.4664
time 8 -0.6931 0.4580 -1.5907 0.2044 -1.51 0.1301
time 9 -0.5878 0.4826 -1.5336 0.3581 -1.22 0.2232
time 10 -0.6931 0.3926 -1.4627 0.0764 -1.77 0.0775
time 11 -0.4796 0.5078 -1.4749 0.5157 -0.94 0.3450
time 12 -0.8979 0.5493 -1.9745 0.1786 -1.63 0.1021
time 13 -1.1987 0.4621 -2.1044 -0.2930 -2.59 0.0095
time 14 -0.5878 0.5112 -1.5897 0.4142 -1.15 0.2502
time 15 -0.6931 0.4580 -1.5907 0.2044 -1.51 0.1301
time 16 -0.4796 0.4781 -1.4166 0.4575 -1.00 0.3158
time 17 -0.7963 0.4639 -1.7055 0.1128 -1.72 0.0860
time 18 -0.1292 0.5327 -1.1733 0.9149 -0.24 0.8084
time 19 -0.5878 0.3451 -1.2642 0.0886 -1.70 0.0885
time 20 -0.4796 0.4464 -1.3545 0.3953 -1.07 0.2827
time 21 -0.9985 0.4763 -1.9321 -0.0649 -2.10 0.0361
time 22 -1.1987 0.4902 -2.1594 -0.2380 -2.45 0.0145
time 23 -0.4796 0.5359 -1.5299 0.5708 -0.89 0.3708
time 24 -0.9985 0.5036 -1.9856 -0.0114 -1.98 0.0474
time 25 -1.0986 0.4546 -1.9896 -0.2076 -2.42 0.0157
time 26 -0.9985 0.4165 -1.8148 -0.1823 -2.40 0.0165
time 27 -1.0986 0.5099 -2.0980 -0.0992 -2.15 0.0312
time 28 -0.9985 0.5295 -2.0363 0.0393 -1.89 0.0593
time 29 -0.7963 0.4924 -1.7614 0.1687 -1.62 0.1058
time 30 -1.0986 0.4830 -2.0454 -0.1519 -2.27 0.0229
time 31 -0.3677 0.4406 -1.2312 0.4958 -0.83 0.4039
time 32 -1.1987 0.4621 -2.1044 -0.2930 -2.59 0.0095
time 33 -0.6931 0.4873 -1.6483 0.2620 -1.42 0.1549
time 34 -0.4796 0.5626 -1.5822 0.6230 -0.85 0.3940
time 35 -0.1292 0.4658 -1.0421 0.7837 -0.28 0.7815
time 36 -0.7963 0.4008 -1.5818 -0.0108 -1.99 0.0469
time 37 -0.2513 0.5330 -1.2960 0.7934 -0.47 0.6373
time 38 -0.2513 0.5024 -1.2360 0.7333 -0.50 0.6169
time 39 -0.4796 0.4123 -1.2876 0.3285 -1.16 0.2447
Creating Mood data set 1229
23:19 Thursday, July 1, 2004
The GENMOD Procedure
Analysis Of GEE Parameter Estimates
Empirical Standard Error Estimates
Standard 95% Confidence
Parameter Estimate Error Limits Z Pr > |Z|
time 40 -0.9985 0.5295 -2.0363 0.0393 -1.89 0.0593
time 41 -0.6931 0.4580 -1.5907 0.2044 -1.51 0.1301
time 42 -0.4796 0.5626 -1.5822 0.6230 -0.85 0.3940
time 43 -1.2993 0.4978 -2.2750 -0.3236 -2.61 0.0091
time 44 -0.5878 0.3841 -1.3407 0.1651 -1.53 0.1260
time 45 -0.6931 0.4580 -1.5907 0.2044 -1.51 0.1301
time 46 -0.9985 0.5036 -1.9856 -0.0114 -1.98 0.0474
time 47 -0.4796 0.5359 -1.5299 0.5708 -0.89 0.3708
time 48 -0.7963 0.4924 -1.7614 0.1687 -1.62 0.1058
time 49 -0.6931 0.4580 -1.5907 0.2044 -1.51 0.1301
time 50 -0.3677 0.5049 -1.3572 0.6218 -0.73 0.4664
time 51 -0.6931 0.5413 -1.7542 0.3679 -1.28 0.2004
time 52 0.0000 0.0000 0.0000 0.0000 . .
group*time 0 1 0.1178 0.8033 -1.4567 1.6923 0.15 0.8834
group*time 0 2 -0.4636 0.6996 -1.8348 0.9076 -0.66 0.5076
group*time 0 3 0.2624 0.7297 -1.1677 1.6925 0.36 0.7192
group*time 0 4 -0.2136 0.7233 -1.6312 1.2041 -0.30 0.7678
group*time 0 5 0.3677 0.6870 -0.9787 1.7141 0.54 0.5924
group*time 0 6 0.8995 0.6341 -0.3432 2.1423 1.42 0.1560
group*time 0 7 -0.1962 0.7035 -1.5750 1.1826 -0.28 0.7803
group*time 0 8 -0.4520 0.6662 -1.7576 0.8536 -0.68 0.4975
group*time 0 9 0.1460 0.6899 -1.2062 1.4981 0.21 0.8324
group*time 0 10 0.1292 0.5620 -0.9722 1.2306 0.23 0.8181
group*time 0 11 0.4796 0.6891 -0.8711 1.8302 0.70 0.4865
group*time 0 12 0.3340 0.7180 -1.0733 1.7413 0.47 0.6418
group*time 0 13 0.6348 0.6926 -0.7227 1.9922 0.92 0.3594
group*time 0 14 -0.1054 0.7063 -1.4896 1.2789 -0.15 0.8814
group*time 0 15 -0.4520 0.6662 -1.7576 0.8536 -0.68 0.4975
group*time 0 16 -0.2136 0.6620 -1.5111 1.0840 -0.32 0.7470
group*time 0 17 -0.0350 0.6714 -1.3509 1.2809 -0.05 0.9585
group*time 0 18 -0.5639 0.7220 -1.9791 0.8512 -0.78 0.4348
group*time 0 19 -0.1054 0.5734 -1.2293 1.0186 -0.18 0.8542
group*time 0 20 0.0377 0.6651 -1.2658 1.3413 0.06 0.9547
group*time 0 21 0.7850 0.6743 -0.5367 2.1066 1.16 0.2444
group*time 0 22 0.6348 0.6739 -0.6861 1.9556 0.94 0.3462
group*time 0 23 -0.3517 0.7230 -1.7688 1.0654 -0.49 0.6266
group*time 0 24 0.7850 0.7102 -0.6069 2.1768 1.11 0.2690
group*time 0 25 0.7732 0.6733 -0.5464 2.0928 1.15 0.2508
group*time 0 26 0.5567 0.6057 -0.6305 1.7439 0.92 0.3581
group*time 0 27 0.4055 0.6648 -0.8975 1.7084 0.61 0.5419
group*time 0 28 0.6731 0.7579 -0.8124 2.1586 0.89 0.3745
group*time 0 29 0.8995 0.6668 -0.4074 2.2065 1.35 0.1774
Creating Mood data set 1230
23:19 Thursday, July 1, 2004
The GENMOD Procedure
Analysis Of GEE Parameter Estimates
Empirical Standard Error Estimates
Standard 95% Confidence
Parameter Estimate Error Limits Z Pr > |Z|
group*time 0 30 0.4055 0.7444 -1.0536 1.8645 0.54 0.5860
group*time 0 31 -0.1962 0.6784 -1.5259 1.1335 -0.29 0.7724
group*time 0 32 0.7569 0.6571 -0.5310 2.0448 1.15 0.2494
group*time 0 33 0.3677 0.7291 -1.0613 1.7968 0.50 0.6140
group*time 0 34 0.0377 0.7480 -1.4284 1.5038 0.05 0.9598
group*time 0 35 -0.7021 0.6945 -2.0634 0.6592 -1.01 0.3121
group*time 0 36 0.2324 0.5902 -0.9244 1.3892 0.39 0.6938
group*time 0 37 -0.1905 0.7595 -1.6790 1.2980 -0.25 0.8019
group*time 0 38 -0.5800 0.7196 -1.9904 0.8304 -0.81 0.4203
group*time 0 39 0.3742 0.5800 -0.7625 1.5109 0.65 0.5188
group*time 0 40 1.1017 0.6633 -0.1983 2.4017 1.66 0.0967
group*time 0 41 0.7963 0.6418 -0.4616 2.0543 1.24 0.2147
group*time 0 42 0.4796 0.7304 -0.9520 1.9111 0.66 0.5115
group*time 0 43 0.9739 0.6861 -0.3708 2.3185 1.42 0.1558
group*time 0 44 0.2624 0.5888 -0.8917 1.4164 0.45 0.6559
group*time 0 45 0.1292 0.6509 -1.1464 1.4049 0.20 0.8426
group*time 0 46 0.6731 0.7073 -0.7131 2.0594 0.95 0.3413
group*time 0 47 0.1542 0.6443 -1.1086 1.4169 0.24 0.8109
group*time 0 48 -0.0350 0.7127 -1.4318 1.3619 -0.05 0.9609
group*time 0 49 0.0000 0.6687 -1.3107 1.3107 0.00 1.0000
group*time 0 50 -0.4636 0.7214 -1.8774 0.9502 -0.64 0.5205
group*time 0 51 0.3677 0.7016 -1.0073 1.7428 0.52 0.6002
group*time 0 52 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 1 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 2 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 3 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 4 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 5 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 6 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 7 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 8 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 9 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 10 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 11 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 12 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 13 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 14 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 15 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 16 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 17 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 18 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 19 0.0000 0.0000 0.0000 0.0000 . .
Creating Mood data set 1231
23:19 Thursday, July 1, 2004
The GENMOD Procedure
Analysis Of GEE Parameter Estimates
Empirical Standard Error Estimates
Standard 95% Confidence
Parameter Estimate Error Limits Z Pr > |Z|
group*time 1 20 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 21 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 22 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 23 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 24 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 25 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 26 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 27 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 28 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 29 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 30 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 31 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 32 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 33 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 34 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 35 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 36 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 37 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 38 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 39 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 40 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 41 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 42 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 43 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 44 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 45 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 46 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 47 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 48 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 49 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 50 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 51 0.0000 0.0000 0.0000 0.0000 . .
group*time 1 52 0.0000 0.0000 0.0000 0.0000 . .
