National Healthcare Quality and Disparities Report
Latest available findings on quality of and access to health care
Data
- Data Infographics
- Data Visualizations
- Data Tools
- Data Innovations
- All-Payer Claims Database
- Healthcare Cost and Utilization Project (HCUP)
- Medical Expenditure Panel Survey (MEPS)
- AHRQ Quality Indicator Tools for Data Analytics
- State Snapshots
- United States Health Information Knowledgebase (USHIK)
- Data Sources Available from AHRQ
Search All Research Studies
AHRQ Research Studies Date
Topics
- Adverse Events (12)
- Ambulatory Care and Surgery (3)
- Cardiovascular Conditions (4)
- Catheter-Associated Urinary Tract Infection (CAUTI) (2)
- Central Line-Associated Bloodstream Infections (CLABSI) (1)
- Children/Adolescents (2)
- Data (1)
- Digestive Disease and Health (1)
- Electronic Health Records (EHRs) (1)
- Evidence-Based Practice (1)
- Guidelines (1)
- (-) Healthcare-Associated Infections (HAIs) (23)
- Healthcare Cost and Utilization Project (HCUP) (1)
- Healthcare Costs (2)
- Health Information Technology (HIT) (1)
- Heart Disease and Health (1)
- Hospital Discharge (1)
- Hospitalization (1)
- Hospitals (4)
- Infectious Diseases (4)
- Injuries and Wounds (7)
- Medical Devices (2)
- Medicare (1)
- Medication: Safety (1)
- Orthopedics (1)
- Patient-Centered Healthcare (1)
- Patient-Centered Outcomes Research (1)
- Patient Safety (15)
- Patient Self-Management (1)
- Pneumonia (1)
- Prevention (4)
- Public Health (1)
- Quality Improvement (3)
- Quality Measures (1)
- Quality of Care (4)
- Risk (4)
- (-) Surgery (23)
- Telehealth (1)
- Urinary Tract Infection (UTI) (2)
- Women (1)
AHRQ Research Studies
Sign up: AHRQ Research Studies Email updates
Research Studies is a compilation of published research articles funded by AHRQ or authored by AHRQ researchers.
Results
1 to 23 of 23 Research Studies DisplayedRinke ML, Oyeku SO, Ford WJH
Costs of ambulatory pediatric healthcare-associated infections: Central-line-associated bloodstream infection (CLABSIs), catheter-associated urinary tract infection (CAUTIs), and surgical site infections (SSIs).
Ambulatory healthcare-associated infections (HAIs) occur frequently in children and are associated with morbidity. Less is known about ambulatory HAI costs. This retrospective case control study estimated additional costs associated with pediatric ambulatory central-line-associated bloodstream infections (CLABSIs), catheter-associated urinary tract infections (CAUTI), and surgical site infections (SSIs) following ambulatory surgery. The authors concluded that ambulatory HAI in pediatric patients were associated with significant additional costs.
AHRQ-funded; HS024432.
Citation: Rinke ML, Oyeku SO, Ford WJH .
Costs of ambulatory pediatric healthcare-associated infections: Central-line-associated bloodstream infection (CLABSIs), catheter-associated urinary tract infection (CAUTIs), and surgical site infections (SSIs).
Infect Control Hosp Epidemiol 2020 Nov;41(11):1292-97. doi: 10.1017/ice.2020.305..
Keywords: Children/Adolescents, Healthcare-Associated Infections (HAIs), Central Line-Associated Bloodstream Infections (CLABSI), Catheter-Associated Urinary Tract Infection (CAUTI), Urinary Tract Infection (UTI), Ambulatory Care and Surgery, Healthcare Costs, Surgery
Anderson DJ, Ilieş I, Foy K
Early recognition and response to increases in surgical site infections using optimized statistical process control charts-the Early 2RIS Trial: a multicenter cluster randomized controlled trial with stepped wedge design.
This paper discusses the study protocol that was used to conduct the Early 2RIS Trial, which was a multicenter cluster randomized controlled trial from 2016 to 2020 to reduce surgical site infection (SSI) rates. The trial was performed in 29 hospitals in the Duke Infection Control Outreach Network (DICON) and 105 clusters over 4 years. All patients who underwent one of 13 targeted procedures at study hospitals were included. Six clusters were identified: cardiac, orthopedic, gastrointestinal, OB-GYN, vascular, and spinal. Clusters were randomized to intervention, and also underwent surveillance and feedback using optimized SPC charts. Surveillance data feedback was provided to all clusters, regardless of allocation or type of surveillance. The goal was to lower SSI through SPC intervention compared to traditional surveillance and feedback alone.
AHRQ-funded; HS023821.
Citation: Anderson DJ, Ilieş I, Foy K .
Early recognition and response to increases in surgical site infections using optimized statistical process control charts-the Early 2RIS Trial: a multicenter cluster randomized controlled trial with stepped wedge design.
Trials 2020 Oct 28;21(1):894. doi: 10.1186/s13063-020-04802-4..
Keywords: Surgery, Healthcare-Associated Infections (HAIs), Infectious Diseases, Patient Safety
Bucher BT, Shi J, Ferraro JP
Portable automated surveillance of surgical site infections using natural language processing: development and validation.
The authors presented the development and validation of a portable natural language processing (NLP) approach for automated surveillance of surgical site infections (SSIs). Patient clinical text notes from EHRs following surgical procedures from two independent healthcare systems were abstracted. The authors found that automated surveillance of SSIs can be achieved using NLP of clinical notes with high sensitivity and specificity.
AHRQ-funded; HS025776.
Citation: Bucher BT, Shi J, Ferraro JP .
Portable automated surveillance of surgical site infections using natural language processing: development and validation.
Ann Surg 2020 Oct;272(4):629-36. doi: 10.1097/sla.0000000000004133..
Keywords: Surgery, Healthcare-Associated Infections (HAIs), Electronic Health Records (EHRs), Health Information Technology (HIT), Quality Improvement, Quality of Care
Strobel RJ, Harrington SD, Hill C
Evaluating the impact of pneumonia prevention recommendations after cardiac surgery.
Pneumonia is the most prevalent healthcare-associated infection after coronary artery bypass grafting (CABG), but the relative effectiveness of strategies to reduce its incidence remains unclear. In this study, the investigators evaluated the relationship between healthcare-associated infection recommendations and risk of pneumonia after CABG. These pneumonia prevention recommendations may serve as effective targets for avoiding postoperative healthcare-associated infections.
AHRQ-funded; HS022535; HS022909.
Citation: Strobel RJ, Harrington SD, Hill C .
Evaluating the impact of pneumonia prevention recommendations after cardiac surgery.
Ann Thorac Surg 2020 Sep;110(3):903-10. doi: 10.1016/j.athoracsur.2019.12.053..
Keywords: Pneumonia, Cardiovascular Conditions, Surgery, Healthcare-Associated Infections (HAIs), Adverse Events, Prevention, Evidence-Based Practice, Guidelines, Risk
De Roo AC, Hendren S, Ameling JM
Using appropriateness criteria to identify opportunities to improve perioperative urinary catheter use.
Researchers applied Michigan Appropriate Perioperative criteria to statewide registry data to identify improvement targets for urinary catheter use. They found that perioperative urinary catheter use was appropriate for most simple abdominal procedures, but duration of use varied in all categories.
AHRQ-funded; HS019767; HS024385; HS018334; HS000053.
Citation: De Roo AC, Hendren S, Ameling JM .
Using appropriateness criteria to identify opportunities to improve perioperative urinary catheter use.
Am J Surg 2020 Sep;220(3):706-13. doi: 10.1016/j.amjsurg.2020.01.008..
Keywords: Catheter-Associated Urinary Tract Infection (CAUTI), Urinary Tract Infection (UTI), Healthcare-Associated Infections (HAIs), Patient Safety, Surgery, Prevention, Adverse Events
Sheetz KH, Ryan A
Accuracy of quality measurement for the hospital acquired conditions reduction program.
Accuracy of quality measurement for the hospital acquired conditions reduction program.
AHRQ-funded; HS026244; HS000053.
Citation: Sheetz KH, Ryan A .
Accuracy of quality measurement for the hospital acquired conditions reduction program.
BMJ Qual Saf 2020 Jul;29(7):605-07. doi: 10.1136/bmjqs-2019-009747..
Keywords: Healthcare-Associated Infections (HAIs), Hospitals, Quality Measures, Quality Improvement, Quality of Care, Surgery, Infectious Diseases
Ilieş I, Anderson DJ, Salem J
Large-scale empirical optimisation of statistical control charts to detect clinically relevant increases in surgical site infection rates.
Researchers sought to determine which statistical process control chart types and design parameters maximized the detection of clinically relevant surgical site infection (SSI) rate increases while minimizing false alarms. Statistically significant SSI rate increases (signals) at individual hospitals were identified using 50 different statistical process control chart variations; blinded epidemiologists evaluated the clinical significance of 2709 representative signals of potential outbreaks and rated them as requiring action or no action. The researchers concluded that an optimized combination of two moving average charts had the best performance for identifying clinically relevant small but sustained above-network SSI rates and large short-term individual hospital increases.
AHRQ-funded; HS023821.
Citation: Ilieş I, Anderson DJ, Salem J .
Large-scale empirical optimisation of statistical control charts to detect clinically relevant increases in surgical site infection rates.
BMJ Qual Saf 2020 Jun;29(6):472-81. doi: 10.1136/bmjqs-2018-008976..
Keywords: Surgery, Healthcare-Associated Infections (HAIs), Infectious Diseases, Hospitals, Patient Safety
Baker AW, Nehls N, Ilies I
Use of optimised dual statistical process control charts for early detection of surgical site infection outbreaks.
This study analyzed the use of optimized dual statistical process control (SPC) charts to predict surgical site infection (SSI) outbreaks. The researchers retrospectively applied an optimized pair of moving average (MA) SPC charts to all 30 SSI outbreaks previously identified and investigated from 2007 to 2015 in the Duke Infection Control Outreach Network (DICON), which is a network of more than 50 community hospitals. The dual MA SPC chart approach detected all 30 outbreaks at a median of 16 months prior to traditional surveillance detection.
AHRQ-funded; HS23821.
Citation: Baker AW, Nehls N, Ilies I .
Use of optimised dual statistical process control charts for early detection of surgical site infection outbreaks.
BMJ Qual Saf 2020 Jun;29(6):517-20. doi: 10.1136/bmjqs-2019-010586..
Keywords: Healthcare-Associated Infections (HAIs), Surgery, Patient Safety, Hospitals, Public Health, Infectious Diseases
Alfred M, Catchpole K, Huffer E
Work systems analysis of sterile processing: decontamination.
This study examined the work of sterile processing departments (SPDs) from a systems perspective. This paper reports the results of a work systems analysis that sought to identify the complex multilevel interdependencies that create performance variation and identify potential improvement interactions. The analysis was conducted at a 700-bed academic hospital with two reprocessing facilities decontaminating approximately 23,000 units each month. Mixed methods, including 56 hours of observations of work was done, as well as formal and informal interviews with relevant stakeholders and analysis of data collected about the system. The authors identified 21 different performance shaping factors, 30 potential failures, 16 types of process variance, and 10 outcome variances in decontamination. Approximately 2% of trays were returned to decontamination from assembly with 1% of surgical cases having decontamination problems.
AHRQ-funded; HS025538.
Citation: Alfred M, Catchpole K, Huffer E .
Work systems analysis of sterile processing: decontamination.
BMJ Qual Saf 2020 Apr;29(4):320-28. doi: 10.1136/bmjqs-2019-009422..
Keywords: Patient Safety, Quality Improvement, Quality of Care, Prevention, Surgery, Healthcare-Associated Infections (HAIs)
Lander DP, Durakovic N, Kallogjeri D
Incidence of infectious complications following cochlear implantation in children and adults.
The goal of this study was to determine the incidence and timing of infectious complications following cochlear implantation. Results showed low rates of infectious complications in cochlear implant recipients, and meningitis was exceedingly rare. Children aged 1 and 2 years experienced infectious complications more frequently than older children, with benefits of early implantation on language development outweighing the risk. Recommendations included increased vigilance by physicians when caring for young children early after implantation and children with prior implant infections.
AHRQ-funded; HS019455.
Citation: Lander DP, Durakovic N, Kallogjeri D .
Incidence of infectious complications following cochlear implantation in children and adults.
JAMA 2020 Jan 14;323(2):182-83. doi: 10.1001/jama.2019.18611..
Keywords: Children/Adolescents, Adverse Events, Surgery, Healthcare-Associated Infections (HAIs)
Chandanabhumma PP, Fetters MD, Pagani FD
Understanding and addressing variation in health care-associated infections after durable ventricular assist device therapy: protocol for a mixed methods study.
This paper discusses an ongoing AHRQ-funded study to understand and address variation in health care-associated infections (HAIs) after durable ventricular assist device (VAD) implantation surgery. This procedure is used only on patients with advanced heart failure who have a poor 1-year estimated survival rate. This is a sequential mixed methods study which is conducting a systematic review of HAI prevention studies, and an in-depth quantitative analyses using administration claims, in-depth clinical data, and organizational surveys of VAD centers. The last aim is to develop and disseminate a best practices toolkit for HAI prevention. Data analysis is currently underway.
AHRQ-funded; HS026003.
Citation: Chandanabhumma PP, Fetters MD, Pagani FD .
Understanding and addressing variation in health care-associated infections after durable ventricular assist device therapy: protocol for a mixed methods study.
JMIR Res Protoc 2020 Jan 7;9(1):e14701. doi: 10.2196/14701..
Keywords: Healthcare-Associated Infections (HAIs), Surgery, Medical Devices, Prevention, Heart Disease and Health, Cardiovascular Conditions, Adverse Events
Song J, Tark A, Larson EL
The relationship between pocket hematoma and risk of wound infection among patients with a cardiovascular implantable electronic device: an integrative review.
Pocket hematoma is a common adverse event following the insertion of cardiovascular implantable electronic devices (CIEDs), but the risk of wound infections associated with a pocket hematoma is unclear. The objective of this integrative review was to examine the relationship between pocket hematoma and risk of wound infection in a CIED population.
AHRQ-funded; HS024915.
Citation: Song J, Tark A, Larson EL .
The relationship between pocket hematoma and risk of wound infection among patients with a cardiovascular implantable electronic device: an integrative review.
Heart Lung 2020 Jan-Feb;49(1):92-98. doi: 10.1016/j.hrtlng.2019.09.009..
Keywords: Medical Devices, Cardiovascular Conditions, Surgery, Adverse Events, Healthcare-Associated Infections (HAIs), Injuries and Wounds, Risk
Sanger P, Hartzler A, Lober WB
Design considerations for post-acute care mHealth: patient perspectives.
The authors are developing an mHealth platform to engage patients in wound tracking to identify and manage surgical site infections (SSI) after hospital discharge. Their key design qualities include: meeting basic accessibility, usability and security needs; encouraging patient-centeredness; facilitating better, more predictable communication; and supporting personalized management by providers. In this article, they illustrated their application of these guiding design considerations and proposed a new framework for mHealth design based on illness duration and intensity.
AHRQ-funded; HS019482.
Citation: Sanger P, Hartzler A, Lober WB .
Design considerations for post-acute care mHealth: patient perspectives.
AMIA Annu Symp Proc 2014 Nov 14;2014:1920-9.
.
.
Keywords: Telehealth, Patient Self-Management, Surgery, Injuries and Wounds, Healthcare-Associated Infections (HAIs), Hospital Discharge, Patient-Centered Healthcare, Patient-Centered Outcomes Research, Adverse Events
Segal CG, Waller DK, Tilley B
An evaluation of differences in risk factors for individual types of surgical site infections after colon surgery.
The authors developed four independent, multivariate, predictive models to assess the unique associations between risk factors and each surgical site infection (SSI) group: superficial, deep, organ space, and an aggregate of all 3 types of SSIs. They found that unique risks for superficial SSIs include diabetes, chronic obstructive pulmonary disease, and dyspnea; deep SSIs had the greatest magnitude of association with BMI and the greatest incidence of wound disruption; and organ space SSIs were often owing to anastomotic leaks and were uniquely associated with disseminated cancer, preoperative dialysis, preoperative radiation treatment, and a bleeding disorder. They concluded that more effective prevention strategies may be developed by reporting and examining each type of SSI separately.
AHRQ-funded; HS021857.
Citation: Segal CG, Waller DK, Tilley B .
An evaluation of differences in risk factors for individual types of surgical site infections after colon surgery.
Surgery 2014 Nov;156(5):1253-60. doi: 10.1016/j.surg.2014.05.010.
.
.
Keywords: Risk, Healthcare-Associated Infections (HAIs), Adverse Events, Surgery, Patient Safety
Bish EK, El-Amine H, Steighner LA
A socio-technical, probabilistic risk assessment model for surgical site infections in ambulatory surgery centers.
The researchers sought to identify the risk factors associated with surgical site infections (SSIs) resulting from procedures performed at ambulatory surgery centers (ASCs) and to design an intervention to mitigate the likelihood of SSIs for the most common risk factors that were identified by the socio-technical probabilistic risk assessment (ST-PRA) tool for a particular surgical procedure. They found that failure to protect the patient effectively accounted for 51.9% of SSIs in the ambulatory care setting. Critical components of this event included skin preparation, antibiotic administration, staff training, proper response to glove punctures during surgery, and adherence to surgical preparation rules related to the wearing of jewelry, watches, and artificial nails. They determined that, assuming a 75% reduction in noncompliance on any combination of 2 of these 5 components, the risk for an SSI decreased.
AHRQ-funded; 290200600019I.
Citation: Bish EK, El-Amine H, Steighner LA .
A socio-technical, probabilistic risk assessment model for surgical site infections in ambulatory surgery centers.
Infect Control Hosp Epidemiol 2014 Oct;35 Suppl 3:S133-41. doi: 10.1086/677824.
.
.
Keywords: Ambulatory Care and Surgery, Risk, Surgery, Healthcare-Associated Infections (HAIs), Patient Safety, Injuries and Wounds, Adverse Events
Warren DK, Nickel KB, Wallace AE
Can additional information be obtained from claims data to support surgical site infection diagnosis codes?
The authors sought to confirm a claims algorithm to identify surgical site infections (SSIs) by examining the presence of clinically expected SSI treatment. They found that over 94% of patients identified by their claims algorithm as having an SSI received clinically expected treatment for infection, including antibiotics, surgical treatment, and culture, suggesting that this algorithm has very good positive predictive value. They concluded that their method may facilitate retrospective SSI surveillance and comparison of SSI rates across facilities and providers.
AHRQ-funded; HS019713.
Citation: Warren DK, Nickel KB, Wallace AE .
Can additional information be obtained from claims data to support surgical site infection diagnosis codes?
Infect Control Hosp Epidemiol 2014 Oct;35 Suppl 3:S124-32. doi: 10.1086/677830.
.
.
Keywords: Data, Healthcare-Associated Infections (HAIs), Patient Safety, Surgery, Injuries and Wounds, Adverse Events
Calderwood MS, Kleinman K, Bratzler DW
Medicare claims can be used to identify US hospitals with higher rates of surgical site infection following vascular surgery.
This study found that among Medicare patients who underwent vascular surgery at 2,512 U.S. hospitals, a patient undergoing surgery in a hospital ranked in the worst-performing decile based on claims had a 2.5 times greater likelihood of developing a chart-confirmed surgical site infection relative to a patient characteristics in a hospital in the best-performing decile.
AHRQ-funded; HS018878
Citation: Calderwood MS, Kleinman K, Bratzler DW .
Medicare claims can be used to identify US hospitals with higher rates of surgical site infection following vascular surgery.
Med Care. 2014 Oct;52(10):918-25. doi: 10.1097/MLR.0000000000000212..
Keywords: Medicare, Surgery, Healthcare-Associated Infections (HAIs), Patient Safety, Hospitals, Adverse Events
Agos F, Shoda C, Bransford D
Part II: managing perioperative hyperglycemia in total hip and knee replacement surgeries.
Perioperative hyperglycemia management is an important factor in reducing the risk of surgical site infections (SSIs) in all patients whether they have diabetes or not. This article describes the impact of an evidence-based practice standard for perioperative hyperglycemia management in the reduction of SSIs in patients having total hip and knee replacement surgery.
AHRQ-funded; HS017892
Citation: Agos F, Shoda C, Bransford D .
Part II: managing perioperative hyperglycemia in total hip and knee replacement surgeries.
Nurs Clin North Am. 2014 Sep;49(3):299-308. doi: 10.1016/j.cnur.2014.05.004..
Keywords: Healthcare-Associated Infections (HAIs), Surgery, Patient Safety, Orthopedics, Injuries and Wounds
Shih T, Zhang M, Kommareddi M
Center-level variation in infection rates after coronary artery bypass grafting.
This study was undertaken to compare observed and expected rates of healthcare-acquired infections (HAIs) across all 33 institutions performing isolated CABG surgery in the state of Michigan. Although predicted risk of HAI differed in absolute terms by 2.8 percent across centers, The study found that observed rates varied by 18.2 percent. Differences in observed rates of infections could not be fully explained by patient case mix.
AHRQ-funded; HS022535.
Citation: Shih T, Zhang M, Kommareddi M .
Center-level variation in infection rates after coronary artery bypass grafting.
Circ Cardiovasc Qual Outcomes 2014 Jul;7(4):567-73. doi: 10.1161/circoutcomes.113.000770..
Keywords: Healthcare-Associated Infections (HAIs), Surgery, Cardiovascular Conditions, Patient Safety
Schweizer ML, Cullen JJ, Perencevich EN
Costs associated with surgical site infections in Veterans Affairs hospitals.
This study evaluated surgical site infections(SSIs) in 1,756 Veterans Administration patients to determine the excess costs associated with total, deep, and superficial SSIs. It found that the highest risk-adjusted costs occurred with deep SSIs and SSIs associated with neurosurgery patients.
AHRQ-funded; HS021992
Citation: Schweizer ML, Cullen JJ, Perencevich EN .
Costs associated with surgical site infections in Veterans Affairs hospitals.
JAMA Surg. 2014 Jun;149(6):575-581. doi:10.1001/jamasurg.2013.4663..
Keywords: Surgery, Healthcare-Associated Infections (HAIs), Patient Safety, Healthcare Costs
Leotsakos A, Zheng H, Croteau R
Standardization in patient safety: the WHO High 5s project.
This paper reports on a global safety initiative of the World Health Organization to facilitate development, implementation, and evaluation of Standard Operating Protocols (SOPs) within a global learning community. Thus far, 3 SOPs—correct surgery, medication reconciliation, concentrated injectable medicines—have been developed, implemented and evaluated in hospitals in 7 participating countries.
AHRQ-funded; 290201200006C
Citation: Leotsakos A, Zheng H, Croteau R .
Standardization in patient safety: the WHO High 5s project.
Int J Qual Health Care. 2014 Apr;26(2):109-16. doi: 10.1093/intqhc/mzu010..
Keywords: Patient Safety, Quality of Care, Surgery, Medication: Safety, Healthcare-Associated Infections (HAIs)
Owens PL, Barrett ML, Raetzman S
AHRQ Author: Owens PL, Steiner CA
Surgical site infections following ambulatory surgery procedures.
The authors determined the incidence of clinically significant surgical site infections (CS-SSIs) following low- to moderate-risk ambulatory surgery in patients with low risk for surgical complications. They found that among patients in 8 states undergoing ambulatory surgery, rates of postsurgical visits for CS-SSIs were low relative to all causes but may represent a substantial number of adverse outcomes in aggregate, thus meriting quality improvement efforts to minimize their occurrence.
AHRQ-authored; AHRQ-funded; 290201300002C.
Citation: Owens PL, Barrett ML, Raetzman S .
Surgical site infections following ambulatory surgery procedures.
JAMA 2014 Feb 19;311(7):709-16. doi: 10.1001/jama.2014.4.
.
.
Keywords: Healthcare Cost and Utilization Project (HCUP), Healthcare-Associated Infections (HAIs), Injuries and Wounds, Ambulatory Care and Surgery, Surgery, Hospitalization, Patient Safety, Adverse Events
Letourneau AR, Calderwood MS, Huang SS
Harnessing claims to improve detection of surgical site infections following hysterectomy and colorectal surgery.
The researchers conducted retrospective cohort studies at 2 academic medical centers, extending analyses of patients undergoing hysterectomy or colorectal surgery. They concluded that claims-enhanced surveillance can help to identify surgical site infections (SSIs) missed by routine surveillance, identifying nearly twice as many SSIs following hysterectomy and 4 times more SSIs following colorectal surgery.
AHRQ-funded; HS021424.
Citation: Letourneau AR, Calderwood MS, Huang SS .
Harnessing claims to improve detection of surgical site infections following hysterectomy and colorectal surgery.
Infect Control Hosp Epidemiol 2013 Dec;34(12):1321-3. doi: 10.1086/673975..
Keywords: Healthcare-Associated Infections (HAIs), Injuries and Wounds, Surgery, Patient Safety, Adverse Events, Women, Digestive Disease and Health