Determination of Interrater Reliability of a Universal Evaluator Rubric to Assess Student Pharmacist Communication Skills

Objective. To evaluate the interrater reliability of a universal evaluator rubric used to assess student pharmacist communication skills during patient education sessions.Methods. Six US schools and colleges of pharmacy each submitted 10 student videos of a simulated community pharmacy patient education session and recruited two raters in each of the five rater groups (faculty, standardized patients, postgraduate year one residents, student pharmacists, and pharmacy preceptors). Raters used a rubric containing 20 items and a global assessment to evaluate student communication of 12 videos. Agreement was computed for individual items and overall rubric score within each rater group, and for each item across all rater groups. Average overall rubric agreement scores were compared between rater groups. Agreement coefficient scores were categorized as no to minimal, weak, moderate, strong, or almost perfect agreement.Results. Fifty-five raters representing five rater groups and six pharmacy schools evaluated student communication. Item agreement analysis for all raters revealed five items with no to minimal or weak agreement, 10 items with moderate agreement, one item with strong agreement, and five items with almost perfect agreement. Overall average agreement across all rater groups was 0.73 (95% CI, 0.66-0.81). The preceptor rater group exhibited the lowest agreement score of 0.68 (95% CI, 0.58-0.78), which significantly deviated from the overall average.Conclusion. While strong or almost perfect agreement scores were not observed for all rubric items, overall average interrater reliability results support the use of this rubric in a variety of raters to assess student pharmacist communication skills during patient education sessions.     

Antibiofilm Effects of Endodontic Sealers Containing Quaternary Ammonium Polyethylenimine Nanoparticles

Introduction

This study evaluated the antibiofilm effects of 2 endodontic sealers incorporated with quaternary ammonium polyethylenimine (QPEI) nanoparticles at a 2% concentration (w/w).

Methods

The materials tested were AH Plus and Pulp Canal Sealer EWT (PCS) in the commercial unmodified form or containing 2% QPEI. Antibiofilm assays were conducted by using direct-contact and membrane-restricted tests for evaluation of bacterial viability in biofilms grown onto membranes or paper disks and the crystal violet microtiter-plate assay to evaluate the effects of sealer extracts on the biofilm biomass. Two Enterococcus faecalis strains (ATCC and an endodontic isolate) were used.

Results

Direct contact and membrane-restricted antibiofilm tests revealed that PCS 2% was the only material to promote total killing of E. faecalis ATCC biofilms. All the materials significantly reduced bacterial counts in E. faecalis ATCC biofilms when compared with the positive control in both tests (P < .05). In the direct test against E. faecalis RW35, PCS 2% was significantly more effective than the other materials and was the only one that showed significantly lower counts than the positive control (P < .05). In the crystal violet assay, only AH Plus 2% presented optical density readings significantly lower than the positive control of the ATCC strain (P < .05). No other significant effects on the biofilm biomass of the 2 E. faecalis strains were observed for any of the sealers tested (P > .05).

Conclusions

Addition of QPEI nanoparticles improved the killing ability of PCS against biofilms of both E. faecalis strains and the effects of AH Plus on the biomass of biofilms from the ATCC strain.     

Mycobacterium leprae Infection in a Wild Nine-Banded Armadillo,Nuevo León,Mexico

Nine-banded armadillos (Dasypus novemcinctus) are naturally infected with Mycobacterium leprae and are implicated in the zoonotic transmission of leprosy in the United States. In Mexico, the existence of such a reservoir remains to be characterized. We describe a wild armadillo infected by M. leprae in the state of Nuevo León, Mexico.