SPSS SYNTAX FOR CREATING

SCALE SCORES FOR THE CTSPC

 

Murray A. Straus

Family Research Laboratory, University of New Hampshire

Durham, NH 03824603-862-2594mas2@christa.unh.edu†† http:/pubpages.unh.edu/~mas2

 

 

 

The CTS is a simple behavior self-report instrument.However, those behavior reports can be used to create a very large number of scores.This document focuses on the syntax needed to create these scores.For explanations of the various scores and when it is appropriate to use one or the other,see the sections on scoring in papers CTS15 and 17, and paper CTS28 which contains the most detailed information on scoring (all three available on my website, address above).

 

Although it may be possible to score the CTS using the pull-down menus, it will take much less time to do it by typing the syntax into the syntax window of SPSS because the syntax for one item or one scale can then be edited to compute the scores for other items and scales.

 

 

†††††††††††† FOUR VERSIONS OF ITEMS AND SCALES

 

It is possible, and often desirable, to create four versions of each of the CTS items and each of the scales.†† See the discussion in paper CTS28.

 

††††††††††††††††††††††† ††††††††††††††††††††††† ††††††††††† ††††††††††† Letter used

††††††††††† Version††††††††††††††††††††† ††††††††††† ††††††††††† in Var. Name

 

Year††† ††††††††††† = Yearly frequency††††††† ††††††††††† Y

Chronicity†††††† = Yearly chronicity†††††††† ††††††††††† C

Prevalence††† = Yearly prevalence††††† ††††††††††† P

Ever ††† ††††††††††† = Ever prevalence††††† ††††††††††† E

 

The syntax in this document creates the four versions by first creating four versions of each item.

 

Year Frequency items: Range = 0 to 25.Category 7 (not in the past year, but happened before), and category 8 (Happened, but not this year)†† recoded to be Zero.

 

Year Chronicity items: Range = 1 to 25.This measures how often each act was done in the previous 12 months, among those parents who did it at least once in the previous 12 months.Categories 7 (not, this year but did happen) and 8 (never happened) were recoded to -999 and flagged as missing.

 

Year Prevalence items:Range = 0-100.Category 1 through 6 = 100. Category 7 (not this year) and 8 (not this year, but previously) were recoded to zero.†† The recoding to 100 was done to make the statistical output be in the form of a percentage rather than a proportion.

 

Ever Prevalence items: Range = 0-1.Categories 1 (once this year) through 7 (happened, but not this year) were recoded as 100.†† Category 8 (never happened) was recoded as zero.

 

 


VARIABLE NAMES FOR CTSPC SCALES

 

Each CTS scale is identified by a five character variable name.For example, CCD1Y, CTD1Y.The explanation for each charter is:

 

Char

acter ††

1,2†††††† Item or Scale

††††††††††† Item names begin with CC, Scale names begin with CT

 

3††††††††† Scale: D, C, P, N, V or S

D = Non-Violent Discipline

C = Corporal Punishment

 

P = Psychological Aggression

A = Physical Abuse

V = Violence (combined C and A)

 

N = Neglect

X = Sexual Abuse

 

4††††††††††† Severity level: 1, 2, or 3

1 = Minor level

2 = Severe level

3 = Total (i.e., all levels combined)

 

5††††††††††† VERSION: Y, C, P, or E†† There are four versions or metrics for each CTS scale

 

Y = Frequency:sum of the Y items

C = Chronicity: Scores of zero are flagged as missing

††††††††††† P = Prevalence: Scores of 1 THRU HIGH are recoded as 100

††††††††††† E = Ever Modes: The number of items with non-zero scores

 

Notes:(1) Non-Violent Discipline scale.There is no P version because everyone did at least one of the acts.

(2) Sexual Abuse.There are no Y or C versions of these scales

††††††††††††††††††††††† ††††††††††† (3) Ever scales can also be transformed to a dichotomous Ever-Never variable like the Ever items.

 

 

††††††† ITEMS IN EACH CTSPC SCALE

 

Scale†††††††††††††† †††††††††††

CTD††† ††††††††††† NON-VIOLENT DISCIPLINE††† ††††††††††††††††††††††† ††††††††††† Q10 A+B+E+Q

 

CTP1†† ††††††††††† PSYCHOLOGICAL AGGRESSION: ORDINARY††††††††††† Q10 F+N

CTP2 ††††††††††† PSYCHOLOGICAL AGGRESSION: SEVERE††††††††††† Q10 J+L+U

CTP3†† ††††††††††† PSYCHOLOGICAL AGGRESSION: OVERALL††††††††††† CTP1+CTP2

 

CTC1††††††††††† CORPORAL PUNISHMENT: ORDINARY ††††††††††† Q10H+P+Q10C

††††††††††† (10C is only for child 2+)

CTC2††††††††††† CORPORAL PUNISHMENT: SEVERE†††††† ††††††††††† Q10 D+R+V

CTC3††††††††††† CORPORAL PUNISHMENT: OVERALL†††† ††††††††††† CTC1+CTC2

 

CTA1†† ††††††††††† PHYSICAL ABUSE††† ††††††††††††††††††††††† ††††††††††† ††††††††††† Q10 O+T+Q10C(for child <2)

 

CTA2†† ††††††††††† PHYSICAL ABUSE: SEVERE†††††††† ††††††††††† ††††††††††† Q10 G+I+K+M+S

CTA3 ††††††††††† PHYSICAL ABUSE: OVERALL†††††† ††††††††††† ††††††††††† CTA1+CTA2

 

CTV†††† ††††††††††† PHYSICAL VIOLENCE: OVERALL†††††† ††††††††††† ††††††††††† CTC3+CTA3

 

CTN†††† ††††††††††† NEGLECT††††††††††††††† ††††††††††††††††††††††† ††††††††††† ††††††††††† Q12 A+B+C+D+E

 

CTXC††††††††††† SEXUAL ABUSE OF CHILD†††††††††††† ††††††††††† ††††††††††† Q30, Q31

CTXR††††††††††† SEXUAL ABUSE OF RESPONDENT††††††††† ††††††††††† Q28, Q29

 

 

INSTRUCTIONS FOR COMPUTING SCALES

 

Yearly Frequency Versions

 

COMPUTE CTDY=Q10YA+Q10YB+Q10YE+Q10YQ.

VAR LABELS CTDY 'CTS NON-VIOLENT DISCIPLINE-YEAR'.

MISSING VALUES CTDY (-999).

 

Repeat above for each of the other scales (CTP1, CTP2 etc). Each label starts with CTS and ends with -YEAR.

 

 

Chronicity Versions

 

COMPUTE †††† ††††††††††† CTDC=CTDY.

RECODE †††††† ††††††††††† CTDC (0 = -999).

VAR LABELS ††††††††††† CTDC 'CTS NON-VIOLENT DISCIPLINE - CHRONICITY'.

MISSING VALUES ††††††††††† CTDC (-999).

 

Repeat above for each scale

 

 

Prevalence Versions

 

COMPUTE †††† ††††††††††† CTP1P=CTP1F.

RECODE †††††† ††††††††††† CTP1P (1 THRU HI = 100).

MISSING VALUES ††††††††††† CT1P (-999).

VALUE LABELS ††††††††††† CTP1P 100'1+THIS YR'0'NOT THIS YR'.

MISSING VALUES ††††††††††† CTP1P (-999).

 

Repeat above for each scale except scale D Non-Violent Discipline scale.There is no P version for this scale because there are almost no parents who did not do at least one of the items.

 

Ever Modes

These versions measure the number of modes (items) in each scale had ever been used.For example, there are five non-violent discipline items.Thus, a parent could have used none, 1, 2, 3, or all five of these modes of non-violent discipline.

 

COMPUTE †††† ††††††††††† CTP1E=(Q10EA+Q10EB+Q10EE+Q10EQ) / 1600.

VAR LABELS CTDY'CTS NON-VIOLENT DISCIPLINE-EVER#MODES'.

MISSING VALUES ††††††††††† CTP1E (-999).

 

Each label should start with CTS and end with -EVR#MODES

 

Sexual Abuse

 

If these items are part of the data gathered, they should recoded to put the categories in ascending ordinal sequence.

 

Q28 & Q29†††† RESP0NDENT TOUCHED OR FORCED SEXUALLY BEFORE 18

Old

Value Label†††††††††††††††† ††††††††††† Value††††††††††† Recode

 

yes, more than once††††††† ††††††††††† 1††††††††††† 2

yes, just once††††††††††††††††† ††††††††††† 2††† ††††††††††† 1

no did not happen†††††††††††† ††††††††††† 3††† ††††††††††† 0

donít know or refused††††††††††† ‑999

 

 

Q30 & Q31†† your child‑touched or forced sexually

Old

Value Label†††††††††††††††† ††††††††††† Value††††††††††† Recode

 

yes, more than once†††††††† ††††††††††† 1††††††††††† 3

yes, just once††††††††††††††††† ††††††††††† 2†† ††††††††††† 2

happened‑not this yr††††††††††† ††††††††††† 3†† ††††††††††† 1

no never happened†††††††††††††† ††††††††††† 4††††††††††† 0

donít know or refused†††††††† ††††††††††† ‑999

 

 

There are no Y or C versions of the sexual abuse scales, only Ever and Prevalence versions for the child, and only Ever version for sexual abuse of the respondent

 

COUNT ††††††††††† CTXCP=Q30 Q32 (2 3).

COUNT ††††††††††† CTXCE=Q30 Q32 (1 2 3).

COUNT ††††††††††† CTXRE=Q28 Q29 (1 2)

 

RECODE ††††††††††† CTXCP CTXCE CTXRE (1,2 =1OO).

 

VARIABLE LABELS††††††††† CTXCP 'SEXUAL ABUSE: CHILD-YEAR'

/CTXCE 'SEXUAL ABUSE: CHILD-EVER'

/CTXRE 'SEXUAL ABUSE OF RESPONDENT-EVER'.

 

VALUE LABELS CTXCP CTXE CTXRE 100'YES' 0'NO'.