Instrument:

Strength of Implementation Intentions Scale (SIIS) for condom use

Implementation
outcome:

Adoption

Instrument summary:

22-item scale measuring the strength of implementation intentions for condom use among non-injection drug users convicted of nonviolent drug offenses

Level of analysis:

Consumer

Country of application:

USA

Psychometric quality
(ConPsyCL):

4 / 22

Global reliability
score (COSMIN):

Fair

Global validity
score (COSMIN):

Fair

Responsiveness
score (COSMIN):

Not assessed

Usability score:

Good

22 items

Reference:

Nydegger LA, Ames SL, Stacy AW. 

Predictive utility and measurement properties of the Strength of Implementation Intentions Scale (SIIS) for condom use.

Soc Sci Med. 1982;2017(185):102–9

Psychometric quality
(ConPsyCL):

ConPsyCL score:

4 / 22

Reliability (Max 5pts)

Internal consistency (Max 3pts)

0 / 1Item internal consistency
/ Item total correlation

0 / 2Alpha

 

Test-retest or inter-rater (Max 2pts)

0 / 1 Item level

0 / 1 Factor level

 

Validity (Max 5pts)

0 / 1 Content validity

0 / 1 Face validity

0 / 1 Convergent validity

0 / 1 Discriminant validity

0 / 1 Discriminative validity

 

Factor Analysis (Max 12pts)

0 / 1 Adequacy measures

0 / 1 Kaiser criterion

0 / 1 Variance explained
/ Parallel analysis

0 / 1 Main loadings

0 / 4 EFA goodness of fit

4 / 4 CFA Goodness of fit

 

0 / -2 Penalty

Methodological quality:
(COSMIN)

Reliability

See how Reliability is scored

Internal consistency

Fair

Reliability

Not assessed

Measurement error

Not assessed

Global reliability score

Fair

Validity

See how Validity is scored

Content validity

Not assessed

Structural validity

Fair

Hypotheses testing

Fair

Cross-cultural validity

Not assessed

Criterion validity

Not assessed

Global validity score

Fair

Responsiveness

See how Responsiveness is scored

Responsiveness

Not assessed