Table 2.
Latent class item response probabilities for PCQ Items in COMBINE (bolded) and MATCH (unbolded)
| Class 1 (Narrow) | Class 2 (Moderate) | Class 3 (Broad) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Response | 1 | 2 | 3 | 4 | 5 | 1 | 2 | 3 | 4 | 5 | 1 | 2 | 3 | 4 | 5 |
| Contingency Management Items | |||||||||||||||
| 1 Do something nice for making efforts to change | .344 | .218 | .292 | .112 | .034 | .061 | .290 | .511 | .134 | .004 | .099 | .128 | .407 | .313 | .053 |
| .322 | .291 | .311 | .075 | .000 | .042 | .217 | .5 | .227 | .015 | .075 | .108 | .322 | .339 | .157 | |
| 9 Reward myself when I don’t give in to my urge | .609 | .253 | .096 | .033 | .008 | .157 | .379 | .398 | .060 | .006 | .179 | .156 | .307 | .258 | .099 |
| .492 | .254 | .200 | .043 | .011 | .073 | .247 | .419 | .243 | .018 | .118 | .125 | .279 | .232 | .247 | |
| 27 Don’t let myself have fun when I drink | .846 | .089 | .040 | .021 | .004 | .365 | .396 | .190 | .045 | .004 | .477 | .192 | .146 | .120 | .064 |
| .584 | .272 | .107 | .029 | .007 | .272 | .341 | .232 | .132 | .023 | .386 | .149 | .172 | .12 | .173 | |
| 36 Spend time with people who reward me | .758 | .118 | .074 | .033 | .017 | .203 | .398 | .297 | .102 | .000 | .137 | .172 | .268 | .274 | .149 |
| .564 | .303 | .103 | .031 | .000 | .101 | .346 | .351 | .187 | .015 | .15 | .139 | .235 | .251 | .225 | |
| Counterconditioning Items | |||||||||||||||
| 8 Calm myself when I get the urge to drink | .486 | .254 | .172 | .097 | .009 | .045 | .230 | .512 | .201 | .011 | .057 | .074 | .258 | .427 | .184 |
| .334 | .262 | .291 | .103 | .01 | .012 | .012 | .012 | .012 | .012 | .052 | .067 | .256 | .387 | .238 | |
| 17 Think about other things | .293 | .276 | .310 | .090 | .031 | .012 | .142 | .482 | .335 | .029 | .025 | .035 | .145 | .453 | .342 |
| .193 | .279 | .347 | .149 | .031 | .002 | .065 | .364 | .52 | .049 | .034 | .038 | .151 | .392 | .385 | |
| 26 Do something else to deal with tension | .287 | .185 | .292 | .160 | .076 | .008 | .176 | .505 | .295 | .015 | .007 | .034 | .176 | .480 | .302 |
| .177 | .210 | .330 | .222 | .060 | .006 | .077 | .341 | .526 | .051 | .009 | .023 | .127 | .381 | .461 | |
| 35 Find that doing things is a substitute for drinking | .135 | .151 | .259 | .307 | .147 | .007 | .079 | .355 | .499 | .059 | .006 | .005 | .101 | .394 | .493 |
| .104 | .128 | .374 | .264 | .13 | .001 | .023 | .226 | .618 | .131 | .008 | .006 | .063 | .339 | .582 | |
| Helping Relationship Items | |||||||||||||||
| 2 Can talk to at least 1 special person | .305 | .168 | .273 | .186 | .068 | .050 | .203 | .410 | .302 | .036 | .058 | .066 | .265 | .396 | .215 |
| .217 | .200 | .345 | .189 | .049 | .016 | .122 | .288 | .473 | .102 | .02 | .027 | .089 | .37 | .493 | |
| 10 Have someone to talk with who understands | .373 | .209 | .181 | .155 | .082 | .071 | .207 | .400 | .273 | .049 | .051 | .083 | .224 | .374 | .269 |
| .287 | .226 | .304 | .138 | .045 | .024 | .129 | .308 | .437 | .102 | .028 | .024 | .076 | .284 | .587 | |
| 18 Have someone I can count on to help me with drinking | .466 | .156 | .177 | .132 | .069 | .081 | .226 | .360 | .288 | .046 | .070 | .078 | .187 | .339 | .327 |
| .314 | .207 | .267 | .148 | .064 | .031 | .127 | .320 | .422 | .101 | .039 | .044 | .096 | .210 | .61 | |
| 28 Have someone who listens when I want to talk | .355 | .247 | .169 | .163 | .066 | .064 | .199 | .395 | .295 | .047 | .053 | .067 | .214 | .325 | .341 |
| .239 | .197 | .334 | .158 | .072 | .015 | .128 | .285 | .458 | .115 | .035 | .027 | .098 | .227 | .614 | |
| Stimulus Control Items | |||||||||||||||
| 7 Remove things from my home that remind me of drinking | .778 | .116 | .059 | .026 | .021 | .289 | .338 | .264 | .105 | .005 | .245 | .134 | .194 | .253 | .174 |
| .708 | .198 | .061 | .033 | .000 | .181 | .325 | .279 | .195 | .019 | .219 | .143 | .163 | .216 | .259 | |
| 16 Avoid situations that encourage me to drink | .392 | .255 | .251 | .072 | .030 | .014 | .192 | .487 | .292 | .015 | .033 | .057 | .190 | .418 | .302 |
| .245 | .302 | .308 | .092 | .053 | .018 | .107 | .371 | .442 | .063 | .045 | .067 | .137 | .326 | .425 | |
| 25 Use reminders to help me not to drink | .719 | .153 | .106 | .013 | .010 | .094 | .386 | .381 | .132 | .007 | .096 | .094 | .248 | .359 | .203 |
| .427 | .289 | .198 | .064 | .022 | .034 | .181 | .434 | .33 | .021 | .056 | .087 | .177 | .319 | .361 | |
| 34 Stay away from places associated with my drinking | .477 | .261 | .146 | .091 | .025 | .049 | .245 | .400 | .277 | .029 | .059 | .083 | .187 | .386 | .285 |
| .432 | .299 | .175 | .051 | .043 | .067 | .198 | .328 | .366 | .04 | .071 | .043 | .132 | .285 | .468 | |
| Dramatic Relief Items | |||||||||||||||
| 3 Get upset when I think about illnesses caused by drinking | .527 | .216 | .151 | .081 | .025 | .213 | .309 | .365 | .111 | .002 | .227 | .217 | .311 | .189 | .055 |
| .377 | .26 | .212 | .128 | .024 | .062 | .257 | .382 | .26 | .04 | .088 | .155 | .300 | .221 | .236 | |
| 11 Warnings about health hazards have emotional effect on me | .468 | .256 | .195 | .060 | .021 | .131 | .376 | .351 | .129 | .012 | .122 | .173 | .297 | .268 | .140 |
| .37 | .277 | .239 | .092 | .022 | .061 | .265 | .388 | .249 | .038 | .100 | .125 | .264 | .285 | .225 | |
| 19 Stories about alcohol/effects upset me | .610 | .220 | .095 | .051 | .024 | .141 | .365 | .390 | .093 | .011 | .159 | .207 | .299 | .234 | .102 |
| .39 | .278 | .26 | .061 | .012 | .073 | .323 | .398 | .182 | .024 | .18 | .184 | .284 | .202 | .149 | |
| 29 Read newspaper stories that affect me emotionally | .765 | .146 | .075 | .014 | .000 | .253 | .428 | .292 | .026 | .002 | .261 | .235 | .324 | .123 | .058 |
| .599 | .258 | .124 | .019 | 000 | .138 | .402 | .379 | .079 | .003 | .254 | .211 | .278 | .186 | .072 | |
| Social Liberation Items | |||||||||||||||
| 21 Society changes in ways that helps me overcome drinking | .407 | .261 | .228 | .069 | .035 | .111 | .317 | .402 | .162 | .009 | .128 | .156 | .278 | .303 | .135 |
| .282 | .308 | .286 | .107 | .017 | .044 | .204 | .43 | .313 | .008 | .101 | .105 | .235 | .359 | .201 | |
| 4 See signs helping people not drink | .582 | .245 | .135 | .033 | .004 | .242 | .380 | .333 | .045 | .000 | .247 | .249 | .347 | .121 | .035 |
| .471 | .239 | .231 | .053 | .006 | .141 | .328 | .388 | .129 | .015 | .21 | .211 | .299 | .177 | .102 | |
| 13 People make known desire not to be pressed to drink | .647 | .191 | .112 | .029 | .021 | .185 | .408 | .331 | .068 | .008 | .163 | .193 | .343 | .222 | .078 |
| .353 | .342 | .245 | .05 | .009 | .063 | .268 | .444 | .213 | .013 | .089 | .132 | .307 | .285 | .186 | |
| 38 See ads on TV how society helps people not to drink | .508 | .298 | .153 | .041 | .000 | .171 | .412 | .349 | .063 | .004 | .150 | .286 | .336 | .156 | .071 |
| .247 | .324 | .309 | .094 | .027 | .043 | .244 | .449 | .242 | .022 | .06 | .145 | .287 | .296 | .212 | |
| Environmental Reevaluation Items | |||||||||||||||
| 5 Think about how my drinking is hurting people | .472 | .256 | .154 | .089 | .028 | .089 | .259 | .464 | .180 | .007 | .092 | .122 | .257 | .416 | .113 |
| .186 | .295 | .362 | .128 | .030 | .025 | .094 | .360 | .480 | .041 | .049 | .050 | .160 | .351 | .39 | |
| 14 People around me would be better off without my drinking | .414 | .253 | .188 | .097 | .048 | .093 | .206 | .416 | .272 | .013 | .094 | .075 | .146 | .375 | .310 |
| .259 | .243 | .321 | .135 | .042 | .045 | .127 | .337 | .422 | .068 | .086 | .057 | .148 | .297 | .413 | |
| 22 Strong feeling how my drinking has hurt people I care about | .316 | .250 | .233 | .166 | .034 | .047 | .226 | .405 | .295 | .027 | .027 | .061 | .175 | .387 | .350 |
| .128 | .219 | .378 | .188 | .087 | .002 | .067 | .268 | .546 | .117 | .013 | .018 | .075 | .268 | .626 | |
| 31 Think my drinking is causing problems for others | .455 | .237 | .227 | .062 | .020 | .068 | .309 | .442 | .174 | .006 | .080 | .060 | .208 | .388 | .264 |
| .260 | .289 | .315 | .100 | .035 | .028 | .134 | .366 | .44 | .031 | .044 | .044 | .141 | .331 | .44 | |
| Self Reevaluation Items | |||||||||||||||
| 6 Feeling good about myself includes changing my drinking | .074 | .127 | .297 | .338 | .164 | .016 | .068 | .247 | .561 | .081 | .013 | .010 | .050 | .395 | .532 |
| .079 | .158 | .353 | .307 | .104 | .011 | .016 | .158 | .667 | .148 | .004 | .009 | .040 | .250 | .696 | |
| 23 Disappointed with self when I depend on alcohol | .320 | .164 | .214 | .205 | .096 | .032 | .109 | .334 | .415 | .110 | .099 | .057 | .100 | .276 | .469 |
| .179 | .16 | .292 | .234 | .136 | .034 | .072 | .207 | .485 | .202 | .057 | .019 | .07 | .185 | .669 | |
| 32 Feel more competent when I decide not to drink | .162 | .149 | .187 | .274 | .229 | .014 | .070 | .306 | .508 | .103 | .005 | .000 | .050 | .310 | .634 |
| .128 | .118 | .307 | .299 | .148 | .001 | .009 | .18 | .641 | .006 | .004 | .008 | .206 | .775 | .006 | |
| 39 Think about type of person I will be if I control my drinking | .185 | .150 | .331 | .221 | .114 | .004 | .102 | .440 | .388 | .066 | .023 | .020 | .088 | .392 | .477 |
| .101 | .135 | .356 | .267 | .141 | .026 | .07 | .224 | .560 | .119 | .058 | .031 | .053 | .211 | .647 | |
| Self Liberation Items | |||||||||||||||
| 12 Use will power to stop from drinking | .197 | .202 | .244 | .194 | .163 | .024 | .133 | .420 | .346 | .077 | .040 | .033 | .185 | .345 | .398 |
| .16 | .173 | .306 | .203 | .159 | .036 | .135 | .342 | .41 | .077 | .096 | .101 | .172 | .241 | .390 | |
| 20 Make myself aware I can choose to overcome my drinking | .114 | .209 | .285 | .226 | .166 | .006 | .074 | .367 | .455 | .098 | .005 | .008 | .041 | .350 | .597 |
| .078 | .122 | .331 | .326 | .143 | .008 | .024 | .231 | .595 | .141 | .005 | .000 | .032 | .228 | .735 | |
| 30 Tell myself if I try hard enough, I can stop drinking | .234 | .235 | .231 | .204 | .096 | .024 | .116 | .398 | .391 | .064 | .021 | .015 | .102 | .351 | .511 |
| .122 | .177 | .33 | .251 | .12 | .014 | .054 | .285 | .519 | .128 | .041 | .034 | .07 | .205 | .65 | |
| 37 Make commitments to myself not to drink | .236 | .217 | .237 | .168 | .142 | .017 | .131 | .372 | .388 | .093 | .008 | .013 | .071 | .354 | .554 |
| .160 | .198 | .287 | .201 | .154 | .004 | .044 | .252 | .530 | .170 | .010 | .025 | .064 | .259 | .643 | |
| Consciousness Raising Items | |||||||||||||||
| 15Read newspaper stories that may help me quit | .731 | .175 | .075 | .015 | .004 | .269 | .358 | .325 | .047 | .000 | .239 | .221 | .315 | .155 | .071 |
| .57 | .286 | .118 | .024 | .002 | .138 | .412 | .354 | .094 | .001 | .233 | .217 | .303 | .182 | .065 | |
| 24 Look for information related to problem drinking | .618 | .194 | .145 | .033 | .011 | .073 | .314 | .449 | .143 | .021 | .079 | .165 | .335 | .248 | .173 |
| .447 | .310 | .193 | .047 | .003 | .050 | .267 | .467 | .197 | .018 | .091 | .115 | .282 | .308 | .203 | |
| 33 Seek groups who increase my awareness | .812 | .116 | .036 | .027 | .008 | .268 | .395 | .265 | .057 | .014 | .218 | .192 | .248 | .207 | .135 |
| .526 | .295 | .129 | .042 | .008 | .056 | .269 | .309 | .314 | .052 | .097 | .084 | .149 | .224 | .446 | |
| 40 Think about information on the benefits of quitting drinking | .424 | .242 | .210 | .099 | .024 | .048 | .195 | .522 | .222 | .012 | .022 | .062 | .223 | .382 | .311 |
| .190 | .230 | .371 | .167 | .043 | .005 | .076 | .35 | .524 | .045 | .020 | .020 | .096 | .319 | .545 | |
Note. Response option 1 = Never, 2 = Seldom, 3 = Occasionally, 4 = Frequently, 5 = Repeatedly. PCQ = Processes of Change Questionnaire