Fig 1.
Police Patrol Practices Scale (PPS).
Items included in the box were read to participants after the phrase “: I would like to ask you about the type and frequency of law enforcement related encounters you may or may not have had with police officers in the past 3 months. How often has an officer…[insert item]?” Scoring is shown for original and revised scales. Items 1, 3, 4 and 5 measure factor 1 (law enforcement patrol practices) and items 2 & 6 measure factor 2 (police assistance patrol practices). Total scores should be calculated separately for each factor. Item 7a is appropriate in settings where police are known to confiscate or destroy condoms.
Table 1.
Police interactions measured using the Patrol Practices Scale (PPS) items among female sex workers (N = 250) in Baltimore, Maryland.
Table 2.
Polychoric correlation matrix of Patrol Practices Scale (PPS) items.
Table 3.
Exploratory Factor Analysis of the Police Patrol Practices Scale (PPS) among FSW in Baltimore, Maryland (N = 250).
Fig 2.
Factor loadings, standard errors and factor covariance from confirmatory factor analysis of the 6-item PPS.
One-factor model is pictured on the left; two-factor model is pictured on the right.
Table 4.
Item factor loadings and significance of the Confirmatory Factor Analysis models.
Table 5.
Associations between PSS Score and sociodemographic, behavioral and police interaction characteristics of female sex workers (N = 250) in Baltimore, Maryland.