APPENDIX C: MODELING STATISTICS

C.1 T-test Results

The t-tests were conducted using SPSS/PC+, version 4.0. The p-values below 0.4, the level chosen for acceptance into the logit model, are marked in boldface type. An asterisk (*) indicates that there is no variance in the sample (the variable is perfectly correlated with the dependent variable). "Center" refers to the preference to work at the telecenter or not, "Home" refers to the preference to work at home or not, and "C vs. H" refers to the preference to work at the center or to work at home.

Table C-1. T-test Results for Factor Variables
Variable Survey
Question		 Description P - value
Center Home C vs. H
JOBSAT1 B3 Supervisor .329 .078 .744
JOBSAT2 B3 Satisfaction .317 .012 .066
JOBSAT3 B3 Interaction .918 .189 .068
JOBSAT4 B3 Frustration .799 .005 .408
TCATT1 C Personal Benefits .000 .000 .000
TCATT2 C Work Ethic .000 .024 .000
TCATT3 C Work Responsibility .256 .296 .015
TCATT4 C Family .000 .007 .000
TCATT5 C Supervisor Concerns .237 .529 .497
HMATT1 C Personal Benefits .137 .000 .006
HMATT2 C Work Ethic .050 .000 .000 HMATT3 C Work Responsibility .205 .001 .040 HMATT4 C Family .790 .670 .312 HMATT5 C Supervisor Concerns .419 .004 .001 RWATT1 C Personal Benefits .335 .039 .113 RWATT2 C Work Ethic .694 .866 .788 RWATT3 C Work Responsibility .082 .042 .987 RWATT4 C Family .302 .532 .544 RWATT5 C Supervisor Concerns .883 .777 .604 Table C-2. T-test Results for Work-related Variables Variable Survey Question Description P - value Center Home C vs. H MANAGER A1 Job type is manager .315 .611 .883 PROFTECH A1 Job type is professional / technical .516 .109 .079 ADSUPP A1 Job type is administrative support .292 .240 .114 SALES A1 Job type is sales / marketing .292 .590 .255 SUPTIME A2 More than 2 years worked for supervisor .657 .504 .803 EMPTIME A2 More than 2 years worked for employer .229 .307 .171 OCCTIME A2 More than 10 years worked in occupation .585 .323 .611 FLEXTIME A4 Flextime work schedule .742 .597 .498 PARTTIME A4 Part-time work schedule .563 .925 .088 OVERTIME A5, A4A Number of hours of overtime in two weeks .330 .286 .899 TELEXPER E1 Previous telecommuting experience .044 .003 .001 CLIENTS B3F Distractions from clients a problem .607 .629 .164 INDWORK A6 Percent of time spent on independent work .602 .087 .115 FTFWORK A6 Percent of time spent on face-to-face work .344 .897 .996 REMWORK A6 Percent of time spent on remote work .601 .187 .757 LOCWORK A6 Percent of time spent on work at a specific location .516 .213 .220 TRAVWORK A6 Percent of time spent on work-related travel .314 .044 .042 PHONSVCS A7 Phone services needed for telecommuting .314 .918 .067 OFFCEQMT A7 Office equipment needed for telecommuting .386 .563 .365 OFFCSPRT A7 Office support needed for telecommuting .348 .717 .415 JOBSUITH E4B Job suitability from home .123 .000 * JOBSUITT E4A Job suitability from a center .061 .729 .445 MANSUPH E5B Manager support from home .159 .000 .000 MANSUPT E5A Manager support from a center .285 .639 .744 Table C-3. T-test Results for Household-related Variables Variable Survey Question Description P - value Center Home C vs. H AGE G1 Category of age .097 .781 .126 HHSIZE G3 Number of persons in household .753 .782 .203 EDUCAT G10 Level of education attained .780 .924 .970 HHINCOME G11 Annual household income .310 .146 .122 FEMALE G1 Gender .322 .058 .571 DEPCARE G4 Presence of dependents other than children needing care .469 .524 .621 CHILDLT2 G5 Presence of children less than 2 years .593 .094 .648 CHILD25 G5 Presence of children from 2 to 5 years .825 .081 .348 CHILD615 G5 Presence of children from 6 to 15 years .386 .742 .273 CHLDLT6 G5 Presence of children less than 6 years .784 .607 .924 CHLDLT16 G5 Presence of children less than 16 years .648 .985 .504 CHLT2F G1, G5 Presence of children less than 2 years and respondent is female .917 * .835 CHLT6F G1, G5 Presence of children less than 6 years and respondent is female .213 .367 .648 CHLT16F G1, G5 Presence of children less than 16 years and respondent is female .386 .371 .558 RELOCATE F5, F6 Desire to relocate or has relocated .774 .467 .255 DISTRW F2 Miles to regular workplace .073 .158 .114 TIMERW F1 Minutes to regular workplace .149 .252 .308 VEHLICDR G7, G8 Number of vehicles per licensed driver .508 .808 .075 VEHWRKR G6, G8 Number of vehicles per worker .349 .655 .033 C.2 Logit Model Statistics The following results for the three preference models were calculated using SST. The initial model has no variables, thus the 2 value is zero. The market share model includes only the constant term in the model. The variables included in the final models are listed in Tables 5-2, 5-3, and 5-4, respectively. Under the number of observations column, the values in parentheses are the number of preferrers and non-preferrers for the first two models and the number of center preferrers and home preferrers for the last model. Table C-4. Auxiliary Statistics for Center Preference Model Model Log Likelihood Number of Observations 2 Adj. 2 Initial -63.77 Market Share -44.231 93 (17/76) .306 .291 Reduced Market Share -44.028 92 (17/75) .310 .294 Final -19.124 92 (17/75) .700 .590 Final on Reduced Data Set -18.207 70 (17/53) .625 .480 Table C-5. Auxiliary Statistics for Home Preference Model Model Log Likelihood Number of Observations 2 Adj. 2 Initial -65.156 Market Share -58.865 94 (30/64) .097 .081 Final -15.492 94 (30/64) .762 .639 Final on Reduced Data Set -11.371 70 (19/51) .766 .601 Table C-6. Auxiliary Statistics for Center vs. Home Preference Model Model Log Likelihood Number of Observations 2 Adj. 2 Initial -63.076 Market Share -60.138 91 (34/57) .046 .031 Final -7.7642 91 (34/57) .877 .782 Final on Reduced Data Set -5.2721 67 (32/35) .886 .757