Fernando Lopes
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Fernando Lopes has a total of 75 co-authors. Here are the top co-authors by number of shared publications:
- Alberto Freitas
University of Porto
18 shared publications - Julio Souza
ISEP, Polytechnic Institute of Porto
5 shared publications - João Vasco Santos
University of Porto
4 shared publications - Altamiro Costa-Pereira
University of Porto
3 shared publications - Ismael Caballero
University of Castilla-La Mancha (UCLM)
3 shared publications João Vasco Santos
MEDCIDS - Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, University of Porto, Portugal; CINTESIS - Centre for Health Technology and Services Research, Faculty of Medicine, University of Porto, Portugal; Public Health Unit, ACES Grande Porto VIII - Espinho/Gaia, ARS Norte, Portugal
3 shared publications
Latest Publications
- 16 November 2025
- Published by Springer Nature
- p. 363-376
Identifiers for Cardiac Implantable Electronic Devices—A Data Quality Assessment of Administrative Hospital Data in Portugal
- 16 November 2025
- Published by Springer Nature
- p. 363-376
Identifiers for Cardiac Implantable Electronic Devices—A Data Quality Assessment of Administrative Hospital Data in Portugal
- Open Access
- 26 September 2025
- Published by Wiley in International Journal of Gynecology & Obstetrics
- Vol. 172 (3) , 1684-1690
National trends of episiotomy in non‐instrumental vaginal deliveries (2013–2022): A multi‐data source approach
Objective: Episiotomy and obstetric anal sphincter injuries (OASIS) are recognized indicators of intrapartum care quality. The aim of this study was to assess episiotomy trends in non‐instrumental vaginal deliveries across all Portuguese public maternities over the last decade. Rates of third‐ and fourth‐degree perineal lacerations were also evaluated. Methods: A retrospective secondary data analysis was conducted using data from an official national health entity, including all non‐instrumental vaginal deliveries in the Portuguese National Health Service between January 1, 2013 and December 31, 2022. Information on episiotomy and third‐ and fourth‐degree perineal lacerations was extracted. Descriptive statistics were presented using absolute and relative frequencies. Linear regression was used to assess trends. Additional national databases were consulted to validate findings, and data quality was assessed using the intraclass correlation coefficient (ICC). A significance level of 5% was considered. Results: Of 689 908 registered deliveries, 490 322 (71%) were vaginal, and 361 887 (52%) were non‐instrumental vaginal deliveries. Among the latter, the episiotomy rate was 42.5%. A significant decrease was observed in episiotomy rates, from 63% in 2013 to 21% in 2022, ( P < 0.001), accompanied by a significant increase in third‐degree perineal lacerations (0.15% to 0.31%, P < 0.001), while fourth‐degree perineal lacerations remained stable (0.03% to 0.02%, P = 0.001). Conclusion: A restrictive episiotomy policy was increasingly adopted in Portugal over the last decade. Although rare, third‐degree perineal lacerations increased during this period. Further research is needed to determine optimal intrapartum care practices regarding episiotomy use. Standardized data coding and improved access to anonymized national datasets are essential for accurate monitoring and cross‐country comparability.
- 26 September 2025
- Published by Wiley in International Journal of Gynecology & Obstetrics
- Vol. 172 (3) , 1684-1690
Open AccessNational trends of episiotomy in non‐instrumental vaginal deliveries (2013–2022): A multi‐data source approach
Objective: Episiotomy and obstetric anal sphincter injuries (OASIS) are recognized indicators of intrapartum care quality. The aim of this study was to assess episiotomy trends in non‐instrumental vaginal deliveries across all Portuguese public maternities over the last decade. Rates of third‐ and fourth‐degree perineal lacerations were also evaluated. Methods: A retrospective secondary data analysis was conducted using data from an official national health entity, including all non‐instrumental vaginal deliveries in the Portuguese National Health Service between January 1, 2013 and December 31, 2022. Information on episiotomy and third‐ and fourth‐degree perineal lacerations was extracted. Descriptive statistics were presented using absolute and relative frequencies. Linear regression was used to assess trends. Additional national databases were consulted to validate findings, and data quality was assessed using the intraclass correlation coefficient (ICC). A significance level of 5% was considered. Results: Of 689 908 registered deliveries, 490 322 (71%) were vaginal, and 361 887 (52%) were non‐instrumental vaginal deliveries. Among the latter, the episiotomy rate was 42.5%. A significant decrease was observed in episiotomy rates, from 63% in 2013 to 21% in 2022, ( P < 0.001), accompanied by a significant increase in third‐degree perineal lacerations (0.15% to 0.31%, P < 0.001), while fourth‐degree perineal lacerations remained stable (0.03% to 0.02%, P = 0.001). Conclusion: A restrictive episiotomy policy was increasingly adopted in Portugal over the last decade. Although rare, third‐degree perineal lacerations increased during this period. Further research is needed to determine optimal intrapartum care practices regarding episiotomy use. Standardized data coding and improved access to anonymized national datasets are essential for accurate monitoring and cross‐country comparability.
- 5 September 2022
- Published by Springer Nature
- p. 190-204
Towards a Process Reference Model for Clinical Coding
- 5 September 2022
- Published by Springer Nature
- p. 190-204
Towards a Process Reference Model for Clinical Coding
- 1 December 2021
- Published by Elsevier in International Journal of Medical Informatics
- Vol. 156, 104584
Analysis of root causes of problems affecting the quality of hospital administrative data: A systematic review and Ishikawa diagram
- 1 December 2021
- Published by Elsevier in International Journal of Medical Informatics
- Vol. 156, 104584
Analysis of root causes of problems affecting the quality of hospital administrative data: A systematic review and Ishikawa diagram
- 30 March 2019
- Published by Springer Nature
- p. 72-82
Problems and Barriers in the Transition to ICD-10-CM/PCS: A Qualitative Study of Medical Coders’ Perceptions
- 30 March 2019
- Published by Springer Nature
- p. 72-82
Problems and Barriers in the Transition to ICD-10-CM/PCS: A Qualitative Study of Medical Coders’ Perceptions
- Open Access
- 11 February 2019
- Published by SAGE Publications in Health Information Management Journal
- Vol. 49 (1) , 28-37
Health records as the basis of clinical coding: Is the quality adequate? A qualitative study of medical coders’ perceptions
Background: Health records are the basis of clinical coding. In Portugal, relevant diagnoses and procedures are abstracted and categorised using an internationally accepted classification system and the resulting codes, together with the administrative data, are then grouped into diagnosis-related groups (DRGs). Hospital reimbursement is partially calculated from the DRGs. Moreover, the administrative database generated with these data is widely used in research and epidemiology, among other purposes. Objective: To explore the perceptions of medical coders (medical doctors) regarding possible problems with health records that may affect the quality of coded data. Method: A qualitative design using four focus groups sessions with 10 medical coders was undertaken between October and November 2017. The convenience sample was obtained from four public hospitals in Portugal. Questions related to problems with the coding process were developed from the literature and authors’ expertise. The focus groups sessions were taped, transcribed and analysed to elicit themes. Results: There are several problems, identified by the focus groups, in health records that influence the coded data: the lack of or unclear documented information; the variability in diagnosis description; “copy & paste”; and the lack of solutions to solve these problems. Conclusion and implications: The use of standards in health records, audits and physician awareness could increase the quality of health records, contributing to improvements in the quality of coded data, and in the fulfilment of its purposes (e.g. more accurate payments and more reliable research).
- 11 February 2019
- Published by SAGE Publications in Health Information Management Journal
- Vol. 49 (1) , 28-37
Open AccessHealth records as the basis of clinical coding: Is the quality adequate? A qualitative study of medical coders’ perceptions
Background: Health records are the basis of clinical coding. In Portugal, relevant diagnoses and procedures are abstracted and categorised using an internationally accepted classification system and the resulting codes, together with the administrative data, are then grouped into diagnosis-related groups (DRGs). Hospital reimbursement is partially calculated from the DRGs. Moreover, the administrative database generated with these data is widely used in research and epidemiology, among other purposes. Objective: To explore the perceptions of medical coders (medical doctors) regarding possible problems with health records that may affect the quality of coded data. Method: A qualitative design using four focus groups sessions with 10 medical coders was undertaken between October and November 2017. The convenience sample was obtained from four public hospitals in Portugal. Questions related to problems with the coding process were developed from the literature and authors’ expertise. The focus groups sessions were taped, transcribed and analysed to elicit themes. Results: There are several problems, identified by the focus groups, in health records that influence the coded data: the lack of or unclear documented information; the variability in diagnosis description; “copy & paste”; and the lack of solutions to solve these problems. Conclusion and implications: The use of standards in health records, audits and physician awareness could increase the quality of health records, contributing to improvements in the quality of coded data, and in the fulfilment of its purposes (e.g. more accurate payments and more reliable research).
- 17 May 2018
- Published by Springer Nature
- p. 1198-1207
Miscoding Alerts Within Hospital Datasets: An Unsupervised Machine Learning Approach
- 17 May 2018
- Published by Springer Nature
- p. 1198-1207
Miscoding Alerts Within Hospital Datasets: An Unsupervised Machine Learning Approach
- 26 January 2018
- Published by Springer Nature in Journal of Medical Systems
- Vol. 42 (3) , 48-48:9
Frequency and Impact of Adverse Events in Inpatients: A Nationwide Analysis of Episodes between 2000 and 2015
Despite being a potential cause of morbidity and economic costs, adverse events remain insufficiently studied. Therefore, we aimed to assess the frequency and impact of adverse events among inpatients. We analysed an administrative database containing a registration of all hospitalisations occurring in Portuguese public hospitals between 2000 and 2015. We identified all episodes with a registration of adverse events, and classified them into three categories, namely (1) misadventures of surgical and medical care, (2) complications of surgical or medical procedures, and (3) adverse drug events (including adverse drug reactions, poisoning events, and late effects). These episodes were compared over their length of stay, in-hospital mortality, and hospital costs with an equal number of hospitalisations matched for patients’ and episodes’ characteristics. Between 2000 and 2015, 5.8% (n = 861,372) of all Portuguese hospitalisations had a registration of at least one adverse event. Hospitalisations with registration of adverse events had a median length of stay of 8 days, median hospitalisation costs of 3060.7 Euro, and an in-hospital mortality of 6.7%. Hospitalisations with registration of misadventures of care, complications of procedures and adverse drug reactions had significantly higher lengths of stay and hospitalisation costs than their matched controls. In-hospital mortality was significantly higher for episodes of misadventures of care and complications of procedures, but lower for adverse drug events hospitalisations. Therefore, adverse events are common among inpatients, and have an important clinical and economic impact. Administrative databases may be useful in their epidemiological assessment.
- 26 January 2018
- Published by Springer Nature in Journal of Medical Systems
- Vol. 42 (3) , 48-48:9
Frequency and Impact of Adverse Events in Inpatients: A Nationwide Analysis of Episodes between 2000 and 2015
Despite being a potential cause of morbidity and economic costs, adverse events remain insufficiently studied. Therefore, we aimed to assess the frequency and impact of adverse events among inpatients. We analysed an administrative database containing a registration of all hospitalisations occurring in Portuguese public hospitals between 2000 and 2015. We identified all episodes with a registration of adverse events, and classified them into three categories, namely (1) misadventures of surgical and medical care, (2) complications of surgical or medical procedures, and (3) adverse drug events (including adverse drug reactions, poisoning events, and late effects). These episodes were compared over their length of stay, in-hospital mortality, and hospital costs with an equal number of hospitalisations matched for patients’ and episodes’ characteristics. Between 2000 and 2015, 5.8% (n = 861,372) of all Portuguese hospitalisations had a registration of at least one adverse event. Hospitalisations with registration of adverse events had a median length of stay of 8 days, median hospitalisation costs of 3060.7 Euro, and an in-hospital mortality of 6.7%. Hospitalisations with registration of misadventures of care, complications of procedures and adverse drug reactions had significantly higher lengths of stay and hospitalisation costs than their matched controls. In-hospital mortality was significantly higher for episodes of misadventures of care and complications of procedures, but lower for adverse drug events hospitalisations. Therefore, adverse events are common among inpatients, and have an important clinical and economic impact. Administrative databases may be useful in their epidemiological assessment.