Ellen J Mackenzie
Biographic Data
| ID | 5536898 |
|---|---|
| NAME | Ellen J Mackenzie |
| GIVEN NAMES | Ellen J |
| FAMILY NAME | Mackenzie |
| SIGNATURE | MACKENZIE E J |
| AFFILIATIONS | Johns Hopkins University |
| ORCID | 0000-0002-5480-8502 |
| VERIFIED | Yes |
| TOTAL WORKS | 10 |
| TOTAL CITATIONS | 13 |
| AUTHOR COUNT | 10 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1985 |
| LATEST PUBLICATION YEAR | 2009 |
| H-INDEX | 3 |
Psychometric properties of the Patient Activation Measure among individuals presenting for elective lumbar spine surgery
Validating the Functional Capacity Index as a measure of outcome following blunt multiple trauma
Return to work following injury
OBJECTIVES: This study examined factors influencing return to work (RTW) following severe fracture to a lower extremity. METHODS: This prospective cohort study followed 312 individuals treated for a lower extremity fracture at 3 level-1 trauma centers. Kaplan-Meier estimates of the proportion of RTW were computed, and a Cox proportional hazards model was used to examine the contribution of multiple risk factors on RTW. RESULTS: Cumulative proport…
Trends in hospitalized discharge rates for head injury in Maryland, 1979-86
Hospital discharge data from all acute care hospitals in Maryland were used to examine trends in hospitalized head injury incidence and outcome by severity. From 1979 to 1986, discharge rates increased by 3.4/100,000 per year; the largest percent increase was for more severe injuries. Discharge rates increased the most for adults ages 15-24 and ages 75+ but declined for children ages 0-4. Coinciding with the increase in head injury discharges was…
Coding external causes of injury (E-codes) in Maryland hospital discharges 1979-88
We examined the trends in hospital discharge E-coding in Maryland over a 10-year period. The overall proportion of E-coded discharges has increased from 40 percent in 1979 to 55 percent in 1988. E-coding was lower in the severely injured, the elderly, and patients with long hospital stays. Our findings demonstrate that E-code reporting varies because of the limited number of data fields available for coding of discharge diagnoses. Universal, syst…
Classifying Trauma Severity Based on Hospital Discharge Diagnoses
This report describes the development and validation of a computerized system for converting ICD-9CM rubrics to Abbreviated Injury Scale (AIS) scores. In collaboration with the Committee on Injury Scaling of the Association for the Advancement of Automotive Medicine, AIS-85 scores were assigned to 2,062 injury-related ICD-9CM rubrics. To validate the conversion table, AIS and Injury Severity Scores (ISS), derived using the conversion, were compar…
Factors influencing return to work following hospitalization for traumatic injury
This paper describes the employment experience of 266 individuals one year after traumatic injury severe enough to require hospitalization. Of those working full-time prior to their injury, 56 per cent were employed full-time at one year; an additional 5 per cent were working part-time. Those sustaining a severe head or spinal cord injury were at highest risk of not returning to work (only 43 per cent and 21 per cent, respectively, had returned w…
Predicting Posttrauma Functional Disability for Individuals Without Severe Brain Injury
The utility of the Abbreviated Injury Scale (AIS), the most widely used anatomic scale for rating severity of injuries, and its derivative for assessing the combined effect of multiple injuries, the Injury Severity Score (ISS), were tested for their ability to predict functional disability at time of discharge from the hospital and 6 months after discharge. The ISS has been shown to correlate well with mortality and length of stay, but the relati…
The Utility of Synthetic and Regression Estimation
Health planning agencies have long had a need for local area data on issues such as health status, utilization, and preventive care. Synthetic estimation and regression techniques have been advanced for use in adjusting national or regional data from the NCHS Health Interview Survey (HIS) to the local area based on demographic and other pertinent variables. To evaluate the accuracy and utility of these techniques for local health planning, estima…
The Abbreviated Injury Scale and Injury Severity Score
Given the wide usage and proven value of the Abbreviated Injury Scale (AIS) in rating severity of trauma, it is essential that certain reliability issues concerning its application be resolved. This article describes a study designed to address these reliability issues. Each of 15 raters with varying qualifications was asked to identify AIS code injuries sustained by 375 trauma patients admitted to four Baltimore area hospitals. Results showed th…
Return to work following injury
OBJECTIVES: This study examined factors influencing return to work (RTW) following severe fracture to a lower extremity. METHODS: This prospective cohort study followed 312 individuals treated for a lower extremity fracture at 3 level-1 trauma centers. Kaplan-Meier estimates of the proportion of RTW were computed, and a Cox proportional hazards model was used to examine the contribution of multiple risk factors on RTW. RESULTS: Cumulative proport…
Factors influencing return to work following hospitalization for traumatic injury
This paper describes the employment experience of 266 individuals one year after traumatic injury severe enough to require hospitalization. Of those working full-time prior to their injury, 56 per cent were employed full-time at one year; an additional 5 per cent were working part-time. Those sustaining a severe head or spinal cord injury were at highest risk of not returning to work (only 43 per cent and 21 per cent, respectively, had returned w…
Coding external causes of injury (E-codes) in Maryland hospital discharges 1979-88
We examined the trends in hospital discharge E-coding in Maryland over a 10-year period. The overall proportion of E-coded discharges has increased from 40 percent in 1979 to 55 percent in 1988. E-coding was lower in the severely injured, the elderly, and patients with long hospital stays. Our findings demonstrate that E-code reporting varies because of the limited number of data fields available for coding of discharge diagnoses. Universal, syst…
Trends in hospitalized discharge rates for head injury in Maryland, 1979-86
Hospital discharge data from all acute care hospitals in Maryland were used to examine trends in hospitalized head injury incidence and outcome by severity. From 1979 to 1986, discharge rates increased by 3.4/100,000 per year; the largest percent increase was for more severe injuries. Discharge rates increased the most for adults ages 15-24 and ages 75+ but declined for children ages 0-4. Coinciding with the increase in head injury discharges was…
The Utility of Synthetic and Regression Estimation
Health planning agencies have long had a need for local area data on issues such as health status, utilization, and preventive care. Synthetic estimation and regression techniques have been advanced for use in adjusting national or regional data from the NCHS Health Interview Survey (HIS) to the local area based on demographic and other pertinent variables. To evaluate the accuracy and utility of these techniques for local health planning, estima…
The Abbreviated Injury Scale and Injury Severity Score
Given the wide usage and proven value of the Abbreviated Injury Scale (AIS) in rating severity of trauma, it is essential that certain reliability issues concerning its application be resolved. This article describes a study designed to address these reliability issues. Each of 15 raters with varying qualifications was asked to identify AIS code injuries sustained by 375 trauma patients admitted to four Baltimore area hospitals. Results showed th…
Predicting Posttrauma Functional Disability for Individuals Without Severe Brain Injury
The utility of the Abbreviated Injury Scale (AIS), the most widely used anatomic scale for rating severity of injuries, and its derivative for assessing the combined effect of multiple injuries, the Injury Severity Score (ISS), were tested for their ability to predict functional disability at time of discharge from the hospital and 6 months after discharge. The ISS has been shown to correlate well with mortality and length of stay, but the relati…
Factors influencing return to work following hospitalization for traumatic injury
This paper describes the employment experience of 266 individuals one year after traumatic injury severe enough to require hospitalization. Of those working full-time prior to their injury, 56 per cent were employed full-time at one year; an additional 5 per cent were working part-time. Those sustaining a severe head or spinal cord injury were at highest risk of not returning to work (only 43 per cent and 21 per cent, respectively, had returned w…
Classifying Trauma Severity Based on Hospital Discharge Diagnoses
This report describes the development and validation of a computerized system for converting ICD-9CM rubrics to Abbreviated Injury Scale (AIS) scores. In collaboration with the Committee on Injury Scaling of the Association for the Advancement of Automotive Medicine, AIS-85 scores were assigned to 2,062 injury-related ICD-9CM rubrics. To validate the conversion table, AIS and Injury Severity Scores (ISS), derived using the conversion, were compar…
Trends in hospitalized discharge rates for head injury in Maryland, 1979-86
Hospital discharge data from all acute care hospitals in Maryland were used to examine trends in hospitalized head injury incidence and outcome by severity. From 1979 to 1986, discharge rates increased by 3.4/100,000 per year; the largest percent increase was for more severe injuries. Discharge rates increased the most for adults ages 15-24 and ages 75+ but declined for children ages 0-4. Coinciding with the increase in head injury discharges was…
Coding external causes of injury (E-codes) in Maryland hospital discharges 1979-88
We examined the trends in hospital discharge E-coding in Maryland over a 10-year period. The overall proportion of E-coded discharges has increased from 40 percent in 1979 to 55 percent in 1988. E-coding was lower in the severely injured, the elderly, and patients with long hospital stays. Our findings demonstrate that E-code reporting varies because of the limited number of data fields available for coding of discharge diagnoses. Universal, syst…
Return to work following injury
OBJECTIVES: This study examined factors influencing return to work (RTW) following severe fracture to a lower extremity. METHODS: This prospective cohort study followed 312 individuals treated for a lower extremity fracture at 3 level-1 trauma centers. Kaplan-Meier estimates of the proportion of RTW were computed, and a Cox proportional hazards model was used to examine the contribution of multiple risk factors on RTW. RESULTS: Cumulative proport…
Validating the Functional Capacity Index as a measure of outcome following blunt multiple trauma
Psychometric properties of the Patient Activation Measure among individuals presenting for elective lumbar spine surgery
Medicine (9 works) · Trauma and Emergency Care Studies (7 works) · Injury prevention (6 works) · Poison control (6 works) · Emergency and Acute Care Studies (5 works) · Injury Epidemiology and Prevention (5 works) · Physical therapy (5 works) · Surgery (5 works) · Medical emergency (4 works) · Occupational safety and health (4 works)