Annotation of imach/html/doc/biaspar.htm, revision 1.7
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1.6 brouard 5: <body><font size="7"><a href=http:/euroreves.ined.fr/imach>IMaCh for Interpolated Markov Chain</a> </font><br>
6: <font size="3">Sponsored by Copyright (C) 2002-2015 <a href=http://www.ined.fr>INED</a>-EUROREVES-Institut de longévité-2013-2016-Japan Society for the Promotion of Sciences 日本学術振興会 (<a href=https://www.jsps.go.jp/english/e-grants/>Grant-in-Aid for Scientific Research 25293121</a>) - <a href=https://software.intel.com/en-us>Intel Software 2015-2018</a></font><br> <hr size="2" color="#EC5E5E">
1.7 ! brouard 7: <font size="2">IMaCh-0.99r24 <br> $Revision: 1.309 $ $Date: 2021/05/20 12:39:14 $</font> <hr size="2" color="#EC5E5E">
1.6 brouard 8: Title=1st_example <br>Datafile=data1.txt Firstpass=1 Lastpass=4 Stepm=1 Weight=0 Model=1+age+<br>
1.5 brouard 9:
10: <hr size="2" color="#EC5E5E"> <ul><li><h4>Parameter files</h4>
11: - Parameter file: <a href="biaspar.imach">biaspar.imach</a><br>
12: - Copy of the parameter file: <a href="orbiaspar.txt">orbiaspar.txt</a><br>
13: - Log file of the run: <a href="biaspar.log">biaspar.log</a><br>
14: - Gnuplot file name: <a href="biaspar.gp">biaspar.gp</a><br>
1.7 ! brouard 15: - Date and time at start: Thu May 20 15:42:13 2021
1.5 brouard 16: </ul>
17:
1.6 brouard 18: <h4>Parameter line 2</h4><ul><li>Tolerance for the convergence of the likelihood: ftol=1e-08
19: <li>Interval for the elementary matrix (in month): stepm=1
20: <li>Number of fixed dummy covariates: ncovcol=2 V1 V2
21: <li> Number of fixed quantitative variables: nqv=0
22: <li> Number of time varying (wave varying) dummy covariates: ntv=0
23: <li>Number of time varying quantitative covariates: nqtv=0
24: <li>Weights column
25: <br>Number of alive states: nlstate=2 <br>Number of death states (not really implemented): ndeath=1
26: <li>Number of waves: maxwav=4
27: <li>Parameter for maximization (1), using parameter values (0), for design of parameters and variance-covariance matrix: mle=1
28: <li>Does the weight column be taken into account (1), or not (0): weight=0</ul>
29: <h4> Diagram of states <a href="biaspar/D_biaspar_.svg">biaspar/D_biaspar_.svg</a></h4>
30: <img src="biaspar/D_biaspar_.svg">
31: <h4>Some descriptive statistics </h4>
1.5 brouard 32: <br>Total number of observations=8270 <br>
33: Youngest age at first (selected) pass 70.00, oldest age 104.17<br>
1.6 brouard 34: Interval (in months) between two waves: Min=1 Max=74 Mean=24.06<br>
1.5 brouard 35:
1.6 brouard 36: <br>File of contributions to the likelihood computed with optimized parameters mle = 1. You should at least run with mle >= 1 to get starting values corresponding to the optimized parameters in order to visualize the real contribution of each individual/wave: <a href="biaspar/ILK_biaspar.txt">biaspar/ILK_biaspar.txt</a><br>
37:
38: <br>Equation of the model: <b>model=1+age+</b><br>
39: <br>- Probability p<sub>1j</sub> by origin 1 and destination j. Dot's sizes are related to corresponding weight: <a href="biaspar/ILK_biaspar-p1j.png">biaspar/ILK_biaspar-p1j.png</a><br> <img src="biaspar/ILK_biaspar-p1j.png"><br>- Probability p<sub>2j</sub> by origin 2 and destination j. Dot's sizes are related to corresponding weight: <a href="biaspar/ILK_biaspar-p2j.png">biaspar/ILK_biaspar-p2j.png</a><br> <img src="biaspar/ILK_biaspar-p2j.png"><br>- The function drawn is -2Log(L) in Log scale: by state of origin <a href="biaspar/ILK_biaspar-ori.png">biaspar/ILK_biaspar-ori.png</a><br> <img src="biaspar/ILK_biaspar-ori.png"><br>- and by state of destination <a href="biaspar/ILK_biaspar-dest.png">biaspar/ILK_biaspar-dest.png</a><br> <img src="biaspar/ILK_biaspar-dest.png"><ul><li><a href='#firstorder'>Result files (first order: no variance)</a>
1.5 brouard 40: <li><a href='#secondorder'>Result files (second order (variance)</a>
1.6 brouard 41: </ul><ul><li> model=1+age+
1.5 brouard 42: </ul><ul><li><h4><a name='firstorder'>Result files (first order: no variance)</a></h4>
1.6 brouard 43: <li>- Observed frequency between two states (during the period defined between 1/1/1984 and 1/6/1988): <a href="biaspar/PHTMFR_biaspar.htm">biaspar/PHTMFR_biaspar.htm</a> (html file)<br/>
44: <li> - Observed prevalence in each state (during the period defined between 1/1/1984 and 1/6/1988): <a href="biaspar/PHTM_biaspar.htm">biaspar/PHTM_biaspar.htm</a> (html file) , <a href="biaspar/P_biaspar.txt">biaspar/P_biaspar.txt</a> (text file) <br>
45: - Estimated transition probabilities over 1 (stepm) months: <a href="biaspar/PIJ_biaspar.txt">biaspar/PIJ_biaspar.txt</a><br>
46: - Estimated back transition probabilities over 1 (stepm) months: <a href="biaspar/PIJB_biaspar.txt">biaspar/PIJB_biaspar.txt</a><br>
47: - Period (forward) prevalence in each health state: <a href="biaspar/PL_biaspar.txt">biaspar/PL_biaspar.txt</a> <br>
48: - Backward prevalence in each health state: <a href="biaspar/PLB_biaspar.txt">biaspar/PLB_biaspar.txt</a> <br>
49: - (a) Life expectancies by health status at initial age, e<sub>i.</sub> (b) health expectancies by health status at initial age, e<sub>ij</sub> . If one or more covariates are included, specific tables for each value of the covariate are output in sequences within the same file (estepm= 1 months): <a href="biaspar/E_biaspar.txt">biaspar/E_biaspar.txt</a> <br>
50: - Prevalence projections by age and states: <a href="biaspar/F_biaspar.txt">biaspar/F_biaspar.txt</a> <br>
1.5 brouard 51: </li>
1.6 brouard 52: <ul><li><b>Graphs</b></li><p>
53: <ul>
54: </ul><br>- Logit model (yours is: logit(pij)=log(pij/pii)= aij+ bij age+) as a function of age: <a href="biaspar/PE_biaspar_1-1-1.svg">biaspar/PE_biaspar_1-1-1.svg</a><br> <img src="biaspar/PE_biaspar_1-1-1.svg"><br>
55: - P<sub>ij</sub> or conditional probabilities to be observed in state j being in state i, 1 (stepm) months before: <a href="biaspar/PE_biaspar_1-2-1.svg">biaspar/PE_biaspar_1-2-1.svg</a><br> <img src="biaspar/PE_biaspar_1-2-1.svg"><br>
56: - I<sub>ij</sub> or Conditional probabilities to be observed in state j being in state i 1 (stepm) months before but expressed in per year i.e. quasi incidences if stepm is small and probabilities too, incidence (rates) are the limit when h tends to zero of the ratio of the probability <sub>h</sub>P<sub>ij</sub> divided by h: <sub>h</sub>P<sub>ij</sub>/h : <a href="biaspar/PE_biaspar_1-3-1.svg">biaspar/PE_biaspar_1-3-1.svg</a><br> <img src="biaspar/PE_biaspar_1-3-1.svg"><br>
57: - Survival functions in state 1. And probability to be observed in state 1 being in state (1 to 2) at different ages. <a href="biaspar/LIJ_biaspar_1-1-1.svg">biaspar/LIJ_biaspar_1-1-1.svg</a><br> <img src="biaspar/LIJ_biaspar_1-1-1.svg"><br>
58: - Survival functions in state 2. And probability to be observed in state 2 being in state (1 to 2) at different ages. <a href="biaspar/LIJ_biaspar_2-1-1.svg">biaspar/LIJ_biaspar_2-1-1.svg</a><br> <img src="biaspar/LIJ_biaspar_2-1-1.svg"><br>
59: - Survival functions in state 1 and in any other live state (total). And probability to be observed in various states (up to 2) being in state 1 at different ages. <a href="biaspar/LIJT_biaspar_1-1-1.svg">biaspar/LIJT_biaspar_1-1-1.svg</a><br> <img src="biaspar/LIJT_biaspar_1-1-1.svg"><br>
60: - Survival functions in state 2 and in any other live state (total). And probability to be observed in various states (up to 2) being in state 2 at different ages. <a href="biaspar/LIJT_biaspar_2-1-1.svg">biaspar/LIJT_biaspar_2-1-1.svg</a><br> <img src="biaspar/LIJT_biaspar_2-1-1.svg"><br>
61: - Convergence to period (stable) prevalence in state 1. Or probability for a person being in state (1 to 2) at different ages, to be in state 1 some years after. <a href="biaspar/P_biaspar_1-1-1.svg">biaspar/P_biaspar_1-1-1.svg</a><br> <img src="biaspar/P_biaspar_1-1-1.svg"><br>
62: - Convergence to period (stable) prevalence in state 2. Or probability for a person being in state (1 to 2) at different ages, to be in state 2 some years after. <a href="biaspar/P_biaspar_2-1-1.svg">biaspar/P_biaspar_2-1-1.svg</a><br> <img src="biaspar/P_biaspar_2-1-1.svg"><br>
63: - Projection of cross-sectional prevalence (estimated with cases observed from 1984.0 to 1988.4 and mobil_average=0), from year 1989.0 up to year 2000.0 tending to period (stable) forward prevalence in state 1. Or probability to be in state 1 being in an observed weighted state (from 1 to 2). <a href="biaspar/PROJ_biaspar_1-1-1.svg">biaspar/PROJ_biaspar_1-1-1.svg</a><br> <img src="biaspar/PROJ_biaspar_1-1-1.svg"><br>
64: - Projection of cross-sectional prevalence (estimated with cases observed from 1984.0 to 1988.4 and mobil_average=0), from year 1989.0 up to year 2000.0 tending to period (stable) forward prevalence in state 2. Or probability to be in state 2 being in an observed weighted state (from 1 to 2). <a href="biaspar/PROJ_biaspar_2-1-1.svg">biaspar/PROJ_biaspar_2-1-1.svg</a><br> <img src="biaspar/PROJ_biaspar_2-1-1.svg">
65: <br>- Life expectancy by health state (1) at initial age and its decomposition into health expectancies in each alive state (1 to 2) (or area under each survival functions): <a href="biaspar/EXP_biaspar_1-1-1.svg">biaspar/EXP_biaspar_1-1-1.svg</a> <br> <img src="biaspar/EXP_biaspar_1-1-1.svg">
66: <br>- Life expectancy by health state (2) at initial age and its decomposition into health expectancies in each alive state (1 to 2) (or area under each survival functions): <a href="biaspar/EXP_biaspar_2-1-1.svg">biaspar/EXP_biaspar_2-1-1.svg</a> <br> <img src="biaspar/EXP_biaspar_2-1-1.svg"></ul>
1.5 brouard 67: <br><li><h4> <a name='secondorder'>Result files (second order: variances)</a></h4>
1.6 brouard 68: - Parameter file with estimated parameters and covariance matrix: <a href="rbiaspar.imach">rbiaspar.imach</a> <br> - 95% confidence intervals and Wald tests of the estimated parameters are in the log file if optimization has been done (mle != 0).<br> But because parameters are usually highly correlated (a higher incidence of disability and a higher incidence of recovery can give very close observed transition) it might be very useful to look not only at linear confidence intervals estimated from the variances but at the covariance matrix. And instead of looking at the estimated coefficients (parameters) of the logistic regression, it might be more meaningful to visualize the covariance matrix of the one-step probabilities. See page 'Matrix of variance-covariance of one-step probabilities' below.
69: - Standard deviation of one-step probabilities: <a href="biaspar/PROB_biaspar.txt">biaspar/PROB_biaspar.txt</a> <br>
70: - Variance-covariance of one-step probabilities: <a href="biaspar/PROBCOV_biaspar.txt">biaspar/PROBCOV_biaspar.txt</a> <br>
71: - Correlation matrix of one-step probabilities: <a href="biaspar/PROBCOR_biaspar.txt">biaspar/PROBCOR_biaspar.txt</a> <br>
72: - Variances and covariances of health expectancies by age and <b>initial health status</b> (cov(e<sup>ij</sup>,e<sup>kl</sup>)(estepm= 1 months): <a href="biaspar/CVE_biaspar.txt">biaspar/CVE_biaspar.txt</a> <br>
73: </li> - (a) Health expectancies by health status at initial age (e<sup>ij</sup>) and standard errors (in parentheses) (b) life expectancies and standard errors (e<sup>i.</sup>=e<sup>i1</sup>+e<sup>i2</sup>+...)(estepm= 1 months): <a href="biaspar/STDE_biaspar.txt">biaspar/STDE_biaspar.txt</a> <br>
74: </li> - Variances and covariances of health expectancies by age. Status (i) based health expectancies (in state j), e<sup>ij</sup> are weighted by the forward (period) prevalences in each state i (if popbased=1, an additional computation is done using the cross-sectional prevalences, i.e population based) (estepm=1 months): <a href="biaspar/V_biaspar.txt">biaspar/V_biaspar.txt</a><br>
75: - Total life expectancy and total health expectancies to be spent in each health state e<sup>.j</sup> with their standard errors (if popbased=1, an additional computation is done using the cross-sectional prevalences, i.e population based) (estepm=1 months): <a href="biaspar/T_biaspar.txt">biaspar/T_biaspar.txt</a> <br>
76: - Standard deviation of forward (period) prevalences: <a href="biaspar/VPL_biaspar.txt">biaspar/VPL_biaspar.txt</a> <br>
77: <ul><li><b>Graphs</b></li><p>
78: <br>- Observed (cross-sectional with mov_average=0) and period (incidence based) prevalence (with 95% confidence interval) in state (1): <a href="biaspar/V_biaspar_1-1-1.svg"> biaspar/V_biaspar_1-1-1.svg</a>
79: <br><img src="biaspar/V_biaspar_1-1-1.svg">
80: <br>- Observed (cross-sectional with mov_average=0) and period (incidence based) prevalence (with 95% confidence interval) in state (2): <a href="biaspar/V_biaspar_2-1-1.svg"> biaspar/V_biaspar_2-1-1.svg</a>
81: <br><img src="biaspar/V_biaspar_2-1-1.svg">
82: <br>- Total life expectancy by age and health expectancies in states (1) and (2). If popbased=1 the smooth (due to the model) true period expectancies (those weighted with period prevalences are also drawn in addition to the population based expectancies computed using observed and cahotic prevalences: <a href="biaspar/E_biaspar_1-1.svg">biaspar/E_biaspar_1-1.svg</a>
83: <br><img src="biaspar/E_biaspar_1-1.svg"></ul>
1.5 brouard 84: <li><h4> Computing and drawing one step probabilities with their confidence intervals</h4></li>
85:
86:
1.6 brouard 87: <li><h4> <a href="biaspar-cov.htm">Matrix of variance-covariance of one-step probabilities (drawings)</a></h4> this page is important in order to visualize confidence intervals and especially correlation between disability and recovery, or more generally, way in and way back. File biaspar-cov.htm</li>
88:
89: <li><h4> Computing probabilities of dying over estepm months as a weighted average (i.e global mortality independent of initial healh state)</h4></li>
90:
91: <br>-STABLBASED_ <br>
92:
93: <br> File (multiple files are possible if covariates are present): <A href="biaspar/PRMORPREV-1-STABLBASED_biaspar.txt">biaspar/PRMORPREV-1-STABLBASED_biaspar.txt</a>
94:
95: <br> Probability is computed over estepm=1 months. <br> <img src="biaspar/VARMUPTJGR--STABLBASED_biaspar1.svg"> <br>
1.5 brouard 96:
97: <li><h4> Computing probabilities of dying over estepm months as a weighted average (i.e global mortality independent of initial healh state)</h4></li>
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1.6 brouard 99: <br>-POPULBASED-NOMOBIL_ <br>
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1.6 brouard 101: <br> File (multiple files are possible if covariates are present): <A href="biaspar/PRMORPREV-1-POPULBASED-NOMOBIL_biaspar.txt">biaspar/PRMORPREV-1-POPULBASED-NOMOBIL_biaspar.txt</a>
1.5 brouard 102:
1.6 brouard 103: <br> Probability is computed over estepm=1 months. <br> <img src="biaspar/VARMUPTJGR--POPULBASED-NOMOBIL_biaspar1.svg"> <br>
1.7 ! brouard 104: <br>Local time at start Thu May 20 15:42:13 2021
! 105: <br>Local time at end Thu May 20 15:43:12 2021
1.5 brouard 106: <br>
107: </body></html>
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