*This program reads the 1991 SIPP Wave 5 Topical Module Research Data File *Note: This program is distributed under the GNU GPL. See end of *this file and http://www.gnu.org/licenses/ for details. *by Jean Roth Mon Jun 7 18:29:19 EDT 2004 *Please report errors to jroth@nber.org *Change output file name/location as desired. *Change the input file location as needed. *If you have trouble running this program, *then try opening a new syntax file & type this command: *INCLUDE "c:\sip91r5.sps". *and choose to RUN ALL * The following changes in variable names have been made, if necessary: * '$' to 'd'; '-' to '_'; '%' to 'p' * Note: Variable names in SPSS are not case-sensitive. file handle sipp91r5 /name='c:\sipp91r5.dat' . data list file=sipp91r5 / suseqnum 1-5 (a) id 6-14 (a) rotation 15 state 16-17 pinx 18-19 addid 20-21 (a) item36b 22-23 intvw 24 pp_mis1 25 pp_mis2 26 pp_mis3 27 pp_mis4 28 pp_mis5 29 entry 30-31 (a) pnum 32-34 (a) finalwgt 35-46 (4) rrp 47 age 48-50 sex 51 race 52 ms 53 pnsp 54-56 pnpt 57-59 higrade 60-61 grd_cmpl 62 ethnicty 63-64 wave 65 tm8000 69 tm8002 70 tm8004 71 tm8006 72-73 tmind1 74-76 tm8010 77-78 tm8012 79 tm8014 80-82 tm8016 83-84 tm8018 85-86 tm8020 87 tm8104 88 tm8106 89-90 tm8108 91-93 tm8110 94-96 tm8112 97 tm8114 98-99 tm8116 100-101 tm8126 102 tm8204 103-104 tm8208 105 tm8210 106-107 tm8212 108-110 tm8216 111-112 tm8218 113-115 tm8222 116-117 tm8274 118 tmind2 119-121 tm8060 122-123 tm8062 124 tm8064 125-127 tm8066 128-129 tm8068 130-131 tm8070 132 tm8154 133 tm8156 134-135 tm8158 136-138 tm8160 139-141 tm8162 142 tm8164 143-144 tm8166 145-146 tm8176 147 tm8254 148-149 tm8258 150 tm8260 151-152 tm8262 153-155 tm8266 156-157 tm8268 158-160 tm8272 161-162 tm8276 163 tm8280 164-165 tm9330 166-167 tm9332 168-169 tm9336 170-171 tm9342 172 tm9344 173 tm9346 174 tm9348 175 tm9350 176 tm9352 177 tm9354 178 tm9356 179 tm9358 180-181 tm9360 182-183 tm9364 184-185 tm9370 186 tm9372 187 tm9374 188 tm9376 189 tm9378 190 tm9380 191 tm9382 192 tm9384 193 tm9385 194 tm9386 195-196 tmebcnt 197-199 tm9390 201 tm9392 202 tm9394 203 tm9396 204-205 tm9398 206-207 tm9414 208 tm9416 209 tm9418 210 tm9420 211-212 tm9422 213-214 tm9424 215-216 tm9486 217 tm9488 218 tm9490 219 tm9492 220 tm9494 221-223 tm9496 224-226 tm9498 227-228 tmpicnt 229-230 tm9610 233 tm9612 234-235 tm9614 236 tm9616 237 tm9618 238-242 tm9620 243-246 tm9622 247 tm9624 248-252 tm9626 253-254 tm9628 255 tm9630 256-259 tm9632 260 tm9634 261-265 tm9636 266 tm9638 267-270 tm9640 271 tm9642 272-275 tm9644 276 tm9646 277-280 tm9648 281 tm9650 282-285 tm9652 286 tm9654 287-291 tm9656 292 tm9658 293-296 tm9660 297 tm9662 298-302 tm9664 303 tm9666 304-308 tm9668 309 tm9670 310-313 tm9672 314 tm9674 315-319 tmetcnt 320-321 tm_ifc1 322 tm_ifc2 323 tm_ifc3 324 tm_ifc4 325 tm_ifc5 326 tm_ifc6 327 tm_ifc7 328 tm_ifc8 329 tm_ifc9 330 tm_ifc10 331 tm_ifc11 332 tm_ifc12 333 tm_ifc13 334 tm_ifc14 335 tm_ifc15 336 tm_ifc16 337 tm_ifc17 338 tm_ifc18 339 tmtedfin 340-344 . * See the codebook for more detailed variable descriptions. variable labels suseqnum "Sequence number of sample unit" id "Sample unit identifier" rotation "Rotation" state "FIPS state code from the MST/GRIN file" pinx "Person index from core" addid "Address ID - This field differentiates" item36b "Control card item 36B -" intvw "Person's interview status" pp_mis1 "Person's monthly interview status" pp_mis2 "Person's monthly interview status" pp_mis3 "Person's monthly interview status" pp_mis4 "Person's monthly interview status" pp_mis5 "Person's monthly interview status" entry "Edited entry address ID" pnum "Edited person number" finalwgt "'STAGE1WT' second stage factor." rrp "Edited relationship to reference perso" age "Edited and imputed age as of last" sex "Sex of this person" race "Race of this person" ms "Marital status" pnsp "Person number of spouse" pnpt "Person number of parent" higrade "What is the highest grade or year of" grd_cmpl "Did he/she complete that grade" ethnicty "Ethnic origin" wave "Wave number within Panel" tm8000 "Check Item T1" tm8002 "Check Item T2" tm8004 "Did ... own and operate a business" tm8006 "How many different businesses did" tmind1 "Three digit industry code for" tm8010 "Check Item T3 for business" tm8012 "Check Item T4 for business" tm8014 "Person number of other owner of" tm8016 "Business ID number of business" tm8018 "What was the form of this (business/" tm8020 "Was this business primarily" tm8104 "Check Item T5 for business" tm8106 "Were any other members of this" tm8112 "Was this (business/practice) owned" tm8114 "What percentage of this (business/" tm8116 "What percentage of this (business/" tm8126 "Check Item T7 for business" tm8204 "Indication of loss" tm8208 "Check Item T8 for business" tm8210 "Apart from the net income already" tm8212 "Person number of first co-owner of" tm8216 "Indication of loss for business" tm8218 "Person number of second co-owner of" tm8222 "Indication of loss for business" tm8274 "Check Item T9" tmind2 "Three digit industry code for" tm8060 "Check Item T3 for business" tm8062 "Check Item T4 for business" tm8064 "Person number of other owner of" tm8066 "ID number of business for other owner" tm8068 "What was the form of this (business/" tm8070 "Was this business primarily" tm8154 "Check Item T5 for business" tm8156 "Were any other members of this" tm8162 "Was this (business/practice) owned" tm8164 "What percentage of this (business/" tm8166 "What percentage of this (business/" tm8176 "Check Item T7 for business one" tm8258 "Check Item T8 for business" tm8260 "Apart from the net income already" tm8262 "Person number of first co-owner of" tm8266 "Indication of loss for business" tm8268 "Person number of second co-owner of" tm8272 "Indication of loss for business" tm8276 "Check Item T10" tm8280 "Indication of loss" tm9330 "Does ... have an individual retirement" tm9332 "Did ... make any contributions to IRA" tm9336 "Did ... make any withdrawals from" tm9342 "Certificates of deposit or other" tm9344 "Money market funds" tm9346 "U.S. government securities" tm9348 "Municipal or corporate bonds" tm9350 "U.S. Savings Bonds" tm9352 "Stocks or mutual fund shares" tm9354 "Other assets" tm9356 "Don't know types of assets" tm9358 "Does...have a KEOGH account in ...'s" tm9360 "Did ... make any contributions to a" tm9364 "Did...make any withdrawals from...'s" tm9370 "Certificates of deposit or other" tm9372 "Money market funds" tm9374 "U.S. government securities" tm9376 "Municipal or corporate bonds" tm9378 "U.S. savings bonds" tm9380 "Stocks or mutual fund shares" tm9382 "Other assets" tm9384 "Don't know of other assets" tm9385 "Are the names of any employers listed" tm9386 "During 1991, did ... participate in a" tmebcnt "Number of items with data on" tm9390 "Check Item T26" tm9392 "Did ... file a federal income tax" tm9394 "Do you have a copy of the tax form" tm9396 "What was ...'s filing status on ...'s" tm9398 "What were the total number of exemptio" tm9414 "Did ... claim exemptions for any" tm9416 "First dependent" tm9418 "Second dependent" tm9420 "Did ... file Form 1040, the long form" tm9422 "Schedule A - itemized deductions" tm9424 "Schedule D - capital gains and" tm9486 "Check Item T35" tm9488 "Check Item T36" tm9490 "Did ... pay any property taxes on ...'" tm9492 "Did ... pay these jointly with some-" tm9494 "Person one" tm9496 "Person two" tm9498 "What was the property tax bill for" tmpicnt "Number of items with data on" tm9610 "Was ... enrolled in school anytime" tm9612 "At what level or grade was..." tm9614 "Check item T37" tm9616 "Was ... enrolled in a public school?" tm9618 "During the past year what was the" tm9620 "What was the total cost of ...'s" tm9622 "Did ... live away from home while" tm9624 "What was the total cost for room and" tm9626 "Any type of educational assistance" tm9628 "The GI bill?" tm9630 "Percent received from GI bill" tm9632 "Other veteran's educational assis-" tm9634 "Percent received from veteran's" tm9636 "College work study program?" tm9638 "Percent received from college work" tm9640 "A Pell grant?" tm9642 "Percent received from Pell grant" tm9644 "A Supplemental Educational" tm9646 "Percent received from SEOG" tm9648 "A national direct student loan?" tm9650 "Percent received from a national" tm9652 "A guaranteed student loan" tm9654 "Percent received from a guaranteed" tm9656 "A JTPA training program" tm9658 "Percent received from JTPA" tm9660 "Employer assistance" tm9662 "Percent of employer assistance" tm9664 "A fellowship or scholarship?" tm9666 "Percent of fellowship or scholarship" tm9668 "A tuition reduction?" tm9670 "Percent received from tuition" tm9672 "Anything else (other than assistance" tm9674 "Percent of educational assistance" tmetcnt "Number of items with data on" tm_ifc1 "Part C imputation flag #01" tm_ifc2 "Part C imputation flag #02" tm_ifc3 "Part C imputation flag #03" tm_ifc4 "Part C imputation flag #04" tm_ifc5 "Part C imputation flag #05" tm_ifc6 "Part C imputation flag #06" tm_ifc7 "Part C imputation flag #07" tm_ifc8 "Part C imputation flag #08" tm_ifc9 "Part C imputation flag #09" tm_ifc10 "Part C imputation flag #10" tm_ifc11 "Part C imputation flag #11" tm_ifc12 "Part C imputation flag #12" tm_ifc13 "Part C imputation flag #13" tm_ifc14 "Part C imputation flag #14" tm_ifc15 "Part C imputation flag #15" tm_ifc16 "Part C imputation flag #16" tm_ifc17 "Part C imputation flag #17" tm_ifc18 "Part C imputation flag #18" tmtedfin "Total amount of educational assistance" . value labels state 1 "Alabama" 4 "Arizona" 5 "Arkansas" 6 "California" 8 "Colorado" 9 "Connecticut" 10 "Delaware" 11 "District Of Columbia" 12 "Florida" 13 "Georgia" 15 "Hawaii" 17 "Illinois" 18 "Indiana" 20 "Kansas" 21 "Kentucky" 22 "Louisiana" 24 "Maryland" 25 "Massachusetts" 26 "Michigan" 27 "Minnesota" 28 "Mississippi" 29 "Missouri" 31 "Nebraska" 32 "Nevada" 33 "New Hampshire" 34 "New Jersey" 35 "New Mexico" 36 "New York" 37 "North Carolina" 39 "Ohio" 40 "Oklahoma" 41 "Oregon" 42 "Pennsylvania" 44 "Rhode Island" 45 "South Carolina" 47 "Tennessee" 48 "Texas" 49 "Utah" 51 "Virginia" 53 "Washington" 54 "West Virginia" 55 "Wisconsin" 61 "Maine, Vermont" 62 "Iowa, North Dakota, South" 63 "Alaska, Idaho, Montana, Wyoming" /item36b 1 "Interviewed" 2 "No one home" 3 "Temporarily absent" 4 "Refused" 5 "Unable to locate" 6 "Other Type A" 9 "Vacant" 10 "Occupied by persons with URE" 11 "Unfit or to be demolished" 12 "Under construction, not ready" 13 "Converted to temporary business" 14 "Unoccupied site for mobile home" 15 "Permit granted, construction" 17 "Demolished" 18 "House or trailer moved" 19 "Converted to permanent business" 20 "Merged" 21 "Condemned" 23 "Entire household deceased," 24 "Moved, address unknown" 25 "Moved within country beyond" 26 "All sample persons relisted on" 28 "Merged household across panels" /intvw 0 "Not applicable (children" 1 "Interview (self)" 2 "Interview (proxy)" 3 "Noninterview - Type Z refusal" 4 "Noninterview - Type Z other" /pp_mis1 1 "Interview" 2 "Non-interview" /pp_mis2 1 "Interview" 2 "Non-interview" /pp_mis3 1 "Interview" 2 "Non-interview" /pp_mis4 1 "Interview" 2 "Non-interview" /pp_mis5 1 "Interview" 2 "Non-interview" /rrp 0 "Not a sample person in this" 1 "Household reference person," 2 "Household reference person" 3 "Spouse of household reference" 4 "Child of household reference" 5 "Other relative of household" 6 "Non-relative of household" 7 "Non-relative of household" /age 0 "Less than 1 full year" 1 "1 year" /sex 1 "Male" 2 "Female" /race 1 "White" 2 "Black" 3 "American Indian, Eskimo or" 4 "Asian or Pacific Islander" /ms 0 "Not a sample person in this" 1 "Married, spouse present" 2 "Married, spouse absent" 3 "Widowed" 4 "Divorced" 5 "Separated" 6 "Never married" /pnsp 0 "Not a sample person in this" 999 "Not applicable" /pnpt 0 "Not a sample person in this" 999 "Not applicable" /higrade 0 "Not applicable if under 15," /grd_cmpl 0 "Not applicable" 1 "Yes" 2 "No" /ethnicty 1 "German" 2 "English" 3 "Irish" 4 "French" 5 "Italian" 6 "Scottish" 7 "Polish" 8 "Dutch" 9 "Swedish" 10 "Norwegian" 11 "Russian" 12 "Ukrainian" 13 "Welsh" 14 "Mexican-American" 15 "Chicano" 16 "Mexican" 17 "Puerto Rican" 18 "Cuban" 19 "Central or South American" 20 "Other Spanish" 21 "Afro-American (Black or Negro)" 30 "Another group not listed" 39 "Don't know" /tm8000 0 "Not applicable" 1 "Yes - skip to TM8006" 2 "No" /tm8002 0 "Not applicable" 1 "Yes - skip to TM9330" 2 "No" /tm8004 0 "Not applicable" 1 "Yes" 2 "No - skip to TM9330" /tm8006 -3 "None - skip to TM9330" 0 "Not applicable" 1 "1 business" 2 "2 businesses" 3 "3+ businesses" /tmind1 0 "Not applicable" /tm8010 -3 "Not listed on control card" 0 "Not applicable" /tm8012 0 "Not universe" 1 "Yes" 2 "No - skip to TM8018" /tm8014 0 "Not applicable" /tm8016 -3 "None - skip to TM8274" 0 "Not applicable" /tm8018 0 "Not applicable" 1 "Sole proprietorship" 2 "Partnership" 3 "Corporation" -1 "DK" /tm8020 0 "Not applicable" 1 "Own home" 2 "Somewhere else" /tm8104 0 "Not applicable" 1 "Yes - skip to TM8118" 2 "No" /tm8106 0 "Not applicable" 1 "Yes" 2 "No - skip to TM8116" -1 "DK - skip to TM8116" /tm8108 0 "Not applicable" /tm8110 0 "Not applicable" /tm8112 0 "Not applicable" 1 "Yes - skip to TM8116" 2 "No" /tm8114 0 "Not applicable" -1 "DK" /tm8116 0 "Not applicable" -1 "DK" /tm8126 0 "Not applicable" 1 "Yes - skip to TM8274" 2 "No" /tm8204 0 "Not applicable" -4 "Lost money - enter loss in" /tm8208 0 "Not applicable" 1 "Yes" 2 "No - skip to TM8274" /tm8210 -1 "DK - skip to TM8274" 0 "Not applicable" 1 "Yes" 2 "No - skip to TM8274" /tm8212 0 "Not applicable" /tm8216 -4 "Lost money" 0 "Not applicable" /tm8218 0 "Not applicable" /tm8222 -4 "Lost money" 0 "Not applicable" /tm8274 0 "Not applicable" 1 "Yes" 2 "No - Go to TM9330" /tmind2 0 "Not applicable" /tm8060 -3 "Not listed on control card" 0 "Not applicable" /tm8062 0 "Not universe" 1 "Yes" 2 "No - skip to TM8068" /tm8064 0 "Not applicable" /tm8066 -3 "None - skip to TM8276" 0 "Not applicable" /tm8068 -1 "DK" 0 "Not applicable" 1 "Sole proprietorship" 2 "Partnership" 3 "Corporation" /tm8070 0 "Not applicable" 1 "Own home" 2 "Somewhere else" /tm8154 0 "Not applicable" 1 "Yes - skip to TM8168" 2 "No" /tm8156 -1 "DK - skip to TM8166" 0 "Not applicable" 1 "Yes" 2 "No - skip to TM8166" /tm8158 0 "Not applicable" /tm8160 0 "Not applicable" /tm8162 0 "Not applicable" 1 "Yes - skip to TM8166" 2 "No" /tm8164 -1 "DK" 0 "Not applicable" /tm8166 -1 "DK" 0 "Not applicable" /tm8176 0 "Not applicable" 1 "Yes - skip to TM8276" 2 "No" /tm8254 0 "Not applicable" -4 "Lost money - enter loss in" /tm8258 0 "Not applicable" 1 "Yes" 2 "No - skip to TM8276" /tm8260 -1 "DK - skip to TM8276" 0 "Not applicable" 1 "Yes" 2 "No - skip to TM8276" /tm8262 0 "Not applicable" /tm8266 -4 "Lost money" 0 "Not applicable" /tm8268 0 "Not applicable" /tm8272 -4 "Lost money" 0 "Not applicable" /tm8276 0 "Not applicable" 1 "Yes" 2 "No - skip to TM8282" /tm8280 -4 "Lost money" 0 "Not applicable" /tm9330 -1 "DK - skip to TM9358" 0 "Not applicable" 1 "Yes" 2 "No - skip to TM9358" /tm9332 -1 "DK - skip to TM9336" 0 "Not applicable" 1 "Yes" 2 "No - skip to TM9336" /tm9336 -1 "DK - skip to TM9340" 0 "Not applicable" 1 "Yes" 2 "No - skip to TM9340" /tm9356 0 "Not applicable" 1 "DK" /tm9358 -1 "DK - skip to TM9385" 0 "Not applicable" 1 "Yes" 2 "No - skip to TM9385" /tm9360 -1 "DK - skip to TM9364" 0 "Not applicable" 1 "Yes" 2 "No - skip to TM9364" /tm9364 -1 "DK - skip to TM9368" 0 "Not applicable" 1 "Yes" 2 "No - skip to TM9368" /tm9384 0 "Not applicable" 1 "DK" /tm9385 0 "Not applicable" 1 "Yes" 2 "No - skip to TM9390" /tm9386 -1 "DK - skip to TM9390" 0 "Not applicable" 1 "Yes" 2 "No - skip to TM9390" /tm9390 0 "Not applicable" 1 "Yes - skip to TM9486" 2 "No" /tm9392 0 "Not applicable" 1 "Yes" 2 "No - skip to TM9486" /tm9394 0 "Not applicable" 1 "Yes" 2 "No" /tm9396 -1 "DK" 0 "Not applicable" 1 "A single taxpayer?" 2 "Married, filing a joint return?" 3 "Married, filing separately?" 4 "Unmarried head of household?" 5 "Qualifying widow(er) with" 6 "Don't know" /tm9398 -1 "DK" -3 "None" 0 "Not applicable" 1 "1 exemption" 2 "2 exemptions" 3 "3-5 exemptions" 4 "6 or more exemptions" /tm9414 0 "Not applicable" 1 "Yes" 2 "No - skip to TM9420" /tm9420 -1 "DK - skip to TM9428" 0 "Not applicable" 1 "Form 1040" 2 "Form 1040A - skip to TM9428" 3 "Form 1040EZ - skip to TM9428" /tm9486 0 "Not applicable" 1 "Owned or being bought?" 2 "Rented for cash? - skip to" 3 "Occupied without cash payment?" /tm9488 0 "Not applicable" 1 "No spouse in household" 2 "Interview for spouse not yet" 3 "Interview for spouse already" /tm9490 0 "Not applicable" 1 "Yes" 2 "No - skip to TM9610" /tm9492 0 "Not applicable" 1 "Yes" 2 "No - skip to TM9498" /tm9498 -1 "DK" -2 "Refused" 0 "Not applicable" 1 "Amount < $100" 2 "Amount from $100 to $199" 3 "Amount from $200 to $299" 4 "Amount from $300 to $399" 5 "Amount from $400 to $499" 6 "Amount from $500 to $599" 7 "Amount from $600 to $699" 8 "Amount from $700 to $799" 9 "Amount from $800 to $899" 10 "Amount from $900 to $999" 11 "Amount from $1000 to $1099" 12 "Amount from $1100 to $1199" 13 "Amount from $1200 to $1299" 14 "Amount from $1300 to $1499" 15 "Amount from $1500 to $1799" 16 "Amount from $1800 to $2099" 17 "Amount of $2100 or more" /tm9610 0 "Not applicable" 1 "Yes" 2 "No - End of interview" /tm9612 0 "Not applicable" 1 "Elementary grades 1-8" 2 "High school grades 9-12" 3 "College year 1" 4 "College year 2" 5 "College year 3" 6 "College year 4" 7 "College year 5" 8 "College year 6+" 9 "Vocational school" 10 "Technical school" 11 "Business school" 12 "Other or DK" /tm9614 0 "Not applicable" 1 "Yes" 2 "No - skip to TM9618" /tm9616 0 "Not applicable" 1 "Yes - End of interview" 2 "No" /tm9618 4500 "Amount from $4000 to $4999" 5500 "Amount from $5000 to $5999" 07000 "Amount from $6000 or more" /tm9620 -3 "None" -1 "Don't know" 0 "Not applicable" /tm9622 0 "Not applicable" 1 "Yes" 2 "No - skip to TM9626" /tm9624 0 "Not applicable" /tm9626 -3 "None - End of interview" 0 "Not applicable" /tm9628 0 "Not marked as received" 1 "Received" /tm9632 0 "Not marked as received" 1 "Received" /tm9636 0 "Not marked as received" 1 "Received" /tm9640 0 "Not marked as received" 1 "Received" /tm9644 0 "Not marked as received" 1 "Received" /tm9648 0 "Not marked as received" 1 "Received" /tm9652 0 "Not marked as received" 1 "Received" /tm9656 0 "Not marked as received" 1 "Received" /tm9660 0 "Not marked as received" 1 "Received" /tm9664 0 "Not marked as received" 1 "Received" /tm9668 0 "Not marked as received" 1 "Received" /tm9672 0 "Not marked as received" 1 "Received" /tm_ifc1 0 "Not imputed" 1 "Imputed" /tm_ifc2 0 "Not imputed" 1 "Imputed" /tm_ifc3 0 "Not imputed" 1 "Imputed" /tm_ifc4 0 "Not imputed" 1 "Imputed" /tm_ifc5 0 "Not imputed" 1 "Imputed" /tm_ifc6 0 "Not imputed" 1 "Imputed" /tm_ifc7 0 "Not imputed" 1 "Imputed TM9630" /tm_ifc8 0 "Not imputed" 1 "Imputed TM9634" /tm_ifc9 0 "Not imputed" 1 "Imputed TM9638" /tm_ifc10 0 "Not imputed" 1 "Imputed TM9642" /tm_ifc11 0 "Not imputed" 1 "Imputed TM9646" /tm_ifc12 0 "Not imputed" 1 "Imputed TM9650" /tm_ifc13 0 "Not imputed" 1 "Imputed TM9654" /tm_ifc14 0 "Not imputed" 1 "Imputed TM9658" /tm_ifc15 0 "Not imputed" 1 "Imputed TM9662" /tm_ifc16 0 "Not imputed" 1 "Imputed TM9666" /tm_ifc17 0 "Not imputed" 1 "Imputed TM9670" /tm_ifc18 0 "Not imputed" 1 "Imputed TM9674" /tmtedfin 4500 "Amount from $4000 - $4999" 5500 "Amount from $5000 - $5999" 07000 "Amount $6000 or more" . execute. save outfile = 'c:\sip91r5.sav'. *Copyright 2004 shared by the National Bureau of Economic Research and Jean Roth * *National Bureau of Economic Research. *1050 Massachusetts Avenue *Cambridge, MA 02138 *jroth@nber.org * *This program and all programs referenced in it are free software. You *can redistribute the program or modify it under the terms of the GNU *General Public License as published by the Free Software Foundation; *either version 2 of the License, or (at your option) any later version. * *This program is distributed in the hope that it will be useful, *but WITHOUT ANY WARRANTY; without even the implied warranty of *MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *GNU General Public License for more details. * *You should have received a copy of the GNU General Public License *along with this program; if not, write to the Free Software *Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *USA.