The Effect of Professional Interpretation on Inpatient ... · PDF fileThe Effect of...
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The Effect of Professional Interpretation on Inpatient Length of Stay and
Readmission Rates
Mary Lindholm, MD;Connie Camelo
and Lee Hargraves, PhD;
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About UMass Memorial Medical CenterA 781-bed (plus 63 bassinets) acute care not for profit organization, clinical partner of the University of Massachusetts Medical School
Comprised of three teaching hospitals and ambulatory practices
Located in Worcester, MA, an ethnically and racially diverse city, 40 mi W of Boston
The largest and most sophisticated emergency service in the region
Level I trauma center for adults and pediatrics, supported by Life-Flight, New England’s first air ambulance service
Level III NICU for high-risk obstetrical and neonatal care
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About UMass Memorial Interpreter Services Department
Largest and most comprehensive hospital based program in centralMassachusetts
QI systems and interventions have received national and international attention. Showcased in the RWJ and AHCRQ Innovations Exchange’s websites
Staff: 35.25 FTE. Director (1), Coordinators (2), 52 interpreters and support staff
OPI vendors: 30 % of overall interpretation volume
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Language Volume FY-10
90 Languages on demand vs. 51 in FY-07
43.8 % increase in pool of 85“Other” Languages
250 % Increase in Arabic
2,250 % Increase in Nepali
UMass Memorial Medical Center Interpretation Volume by Language
101,423 (Forecast FY10)
Albanian, 4377 (4%)
ASL, 1849 (2%)
"Other"
(85 Languages) 13389 (13%)
Vietnamese, 7450 (7%)
Spanish, 63214 (63%)
Portuguese, 11144 (11%)
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FY-10 Interpretation Volume: 144 % Increase from FY-02UM ass M emo rial M edical C enter
Interpretat io n Vo lume F Y- 02 to F Y-10
5 4 , 6 4 66 1, 4 5 7 5 9 , 6 3 0
70, 085
5 6 , 9 7 3
4 1, 4 0 3
10 1, 4 2 3
7 6 , 4 4 78 2 , 8 5 8
0
20, 000
40, 000
60, 000
80, 000
100, 000
120, 000
T ot a l V ol ume 41, 403 54, 646 61, 457 56, 973 59, 630 70, 085 76, 447 82, 858 101, 423
% I ncr ease Cur r ent vs. P r i or year 31. 0% 12. 4% 8. 7% 4. 7% 17. 5% 9. 0% 8. 4% 22%
FY - 02 FY - 03 FY - 04 FY - 05 FY - 06 FY - 07 FY - 08 FY - 09 For ecast FY - 10
101,423 Interpretation encounters
68,967 Ambulatory
13,306 ED
10,527 Surgery
11,156 Inpatients
8,623 Other areas
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LS Quality Improvement Goals
Increasing % of patients receiving LS through qualified interpreters
Reducing patient-provider waiting time for an interpreter: 86 % of patients waited 15” or less
Maintaining a highly qualified interpreter work force, includingcontractors and OPI vendors:
Increasing productive of on-site interpreters
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Background
Language barriers can adversely affect health
Low English Proficient (LEP) patients who do not receive professional interpretation have a poorer understanding of theirdischarge diagnosis and treatment plan
Use of non professional interpreters can lead to medical errors and misinterpretation of up to half of physicians’ questions
Professional interpreters help improve patient’s understanding and utilization of healthcare
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Adverse Outcomes: LEP Patients
Asthmatic children with LEP parents 3 times more likely to be intubated for their asthma than those with English proficient parents(LeSon & Gershwin. J Asthma 1995;32:285-294)
Monolingual Spanish-speaking adults with asthma whose physicians speak English: 3 times more likely to miss 1 or more follow-up appointments(Manson. Med Care 1988;26:1119)
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Health Status and Communication
LEP patients who need but don’t get interpreters are more likely than LEP patients who used interpreters and EP patients to:
Have poor or fair self-reported understanding of diagnosis and treatment plan
Wish healthcare provider explained things better (Baker et al. JAMA 1996)
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Joint Commission study on adverse events
Study of six hospitals over seven months
49.1 vs 29.5% of adverse events with LEP patients resulted in physical harm
46.8 vs 24.4% of adverse events with LEP patients classified as moderate transient to death
LEP adverse events more likely to be due to communication error (52.4% vs. 35.9%)
– Divi et al. Intl J Quality in Hlth Care 2007; 19: 60-67
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Objectives
To examine interpretation trends of LEP inpatients during their admission at a tertiary care medical center
To compare patient self identified need for interpretation with actual interpreted encounters
To compare inpatient interpreter usage with length of stay (LOS) and readmission rates
To interview patients about their interpreter usage to qualitatively access their experience
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Methods
• Data base of inpatients requiring interpretation for three years and their diagnosis and LOS collected
• Professional interpretation utilization for same three years obtained
• Readmission rates to hospital within 30 days calculated
• Comparison of LOS, and readmission rates with interpretation utilization
• Patient interviews
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Patients with Limited English Proficiency in the Sample
Initial Sample of patients 4100
Patients with no interpretation events 973
Patients with LOS=0 54
Patients with LOS > 85 2
Analytic Sample 3071
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Patient Age
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Patient Gender
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Patient’s Preferred Language
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Timing of Interpretation
424
957
482
1238
969
10.4% 23.5% 11.8% 30.4% 23.8%0
200
400
600
800
1000
1200
1400
Interpreter, at AdmitOnly
Interpreter, atDischarge Only
Interpreter, bothAdmit/Discharge
Interpreter, notAdmit/Discharge
No Interpreter
Num
ber o
f Pat
ient
s
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Interpreter on Admission By Language
56.9 56.0 54.959.1
42.6
26.9
0
10
20
30
40
50
60
70
Spanish (2976) Portuguese(568)
Vietnamese(277)
Albanian (254) Russian (129) Other (642)
Percentage
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Length of Hospital Stay and Interpretation
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Readmission Rate By Language
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Readmission Rates By Timing Of Interpretation
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Spanish Readmission Rate By Timing Of Interpretation
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Non Spanish LEP Readmission Rates By Timing Of Interpretation
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Additional Results
Controlling for age, gender, language, length of stay, major conditions, and severity of illness, LEP patients who had an interpreter at admission were less likely (odds ratio of 0.65) to be readmitted in 30 days
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Interview Results
15 Spanish and 9 Vietnamese patients interviewed
Patients appreciative of staff communication effort
Family members were often used as interpreters
Patients indicated preference for professional interpreters
Procedures and tests not consistently explained with use of professional interpreter
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Conclusions
We need to improve the rate at which we provide professional interpretation to our LEP patients as it has both medical and economic consequences.
LEP patients who don’t receive interpretation at admission and/or discharge have average increased LOS of between 0.6 to 2.4 days
Readmission rates for LEP patients who don’t receive interpretation are 9.4% higher than those who have interpreters for admission and discharge
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Changes Implemented
Creating a culture of quality and measurementDeveloping a systematic data collection process to document, measure and monitor effectiveness of LSSystems to identify patient's preferred language and need for an interpreterDaily language/interpreter error report to the registration staffSystems and guidelines for receiving, prioritizing an delivering Interpreter services requests Process for evaluating and maintaining qualifications of LS staffStrategic roll out of Over-the-Phone interpretingChanging staffing practices