Risk factors for cesarean surgical site infections at a Thai-Myanmar border hospital

Global incidence of surgical site infections following caesarean section: a systematic review and meta-analysis

BACKGROUND

Surgical site infection (SSI) is a health-threatening complication following caesarean section (CS); however, to the authors' knowledge, there is no worldwide estimate of the burden of post-CS SSIs. Therefore, this systematic review and meta-analysis aimed to estimate the global and regional incidence of post-CS SSIs and associated factors.

METHODS

International scientific databases were searched systematically for observational studies published from January 2000 to March 2023, without language or geographical restrictions. The pooled global incidence rate was estimated using a random-effects meta-analysis (REM), and then stratified by World-Health-Organization-defined regions as well as by sociodemographic and study characteristics. Causative pathogens and associated risk factors of SSIs were also analysed using REM. Heterogeneity was assessed with I2.

RESULTS

In total, 180 eligible studies (207 datasets) involving 2,188,242 participants from 58 countries were included in this review. The pooled global incidence of post-CS SSIs was 5.63% [95% confidence interval (CI) 5.18-6.11%]. The highest and lowest incidence rates for post-CS SSIs were estimated for the African (11.91%, 95% CI 9.67-14.34%) and North American (3.87%, 95% CI 3.02-4.83%) regions, respectively. The incidence was significantly higher in countries with lower income and human development index levels. The pooled incidence estimates have increased steadily over time, with the highest incidence rate during the coronavirus disease 2019 pandemic (2019-2023). Staphylococcus aureus and Escherichia coli were the most prevalent pathogens. Several risk factors were identified.

CONCLUSION

An increasing and substantial burden from post-CS SSIs was identified, especially in low-income countries. Further research, greater awareness and the development of effective prevention and management strategies are warranted to reduce post-CS SSIs.

Postoperative C-reactive protein as a predictive marker for surgical site infection after cesarean section: Retrospective analysis of 748 patients at a Japanese academic institution

Surgical site infection (SSI) is a common but potentially serious maternal complication of cesarean section (CS). C-reactive protein (CRP) can be used in early detection of SSI. However, its predictive value for post-cesarean SSI has never been investigated. This study aims to evaluate the predictive value of CRP for the development of SSI. This was a hospital-based retrospective cohort study of 748 pregnant women who underwent CS at our university hospital between January 2017 and December 2019. CRP was measured on postoperative days 1, 3, and 6. The predictive values of CRP for SSI were evaluated using receiver operating characteristics analysis. Forty-seven (6.3%) patients developed SSI, of whom 38 (80.9%) underwent emergency CS. Serum CRP levels were significantly higher in the SSI group than in the non-SSI group from postoperative day 1 (64 vs. 81 mg/L, p = 0.001); the difference became more evident on postoperative days 3 and 6. The area under the receiver operating characteristic curve (AUC) for CRP on days 1, 3, and 6 was 0.58 (95% confidence interval [CI], 0.49 to 0.68), 0.70 (0.62 to 0.78) and 0.73 (0.65 to 0.81), respectively. The optimal cutoff value for day 3 and 6 CRP was 66.4 mg/L (sensitivity = 76.1% and specificity = 54.4%) and 22.2 mg/L (sensitivity = 76.5% and specificity = 63.2%), respectively. CRP on postoperative days 3 and 6 can be used as a predictive marker for the development of SSI after CS. Further studies to validate the predictive value in different populations is essential.

Incidence, risk factors and management of post cesarean section surgical site infection (SSI) in a tertiary hospital in Egypt: a five year retrospective study

BACKGROUND

Surgical site infection (SSI) is one of the commonest complications following cesarean section (CS) with a reported incidence of 3-20%. SSI causes massive burdens on both the mother and the health care system. Moreover, it is associated with high maternal morbidity and mortality rate of up to 3%. This study aims to determine the incidence, risk factors and management of SSI following CS in a tertiary hospital.

METHODS

This was an observational case control retrospective study which was conducted at Minia maternity university hospital, Egypt during the period from January 2013 to December 2017 (Five years). A total of 15,502 CSs were performed during the studied period, of these, 828 cases developed SSI following CS (SSI group). The control group included 1500 women underwent cesarean section without developing SSI. The medical records of both groups were reviewed regarding the sociodemographic and the clinical characteristics.

RESULTS

The incidence of SSI post-cesarean section was 5.34%. Significant risk factors for SSI were; chorioamnionitis (adjusted odds ratio (AOR) 4.51; 95% CI =3.12-6.18), premature rupture of membranes (PROM) (AOR 3.99; 95% CI =3.11-4.74), blood loss of > 1000 ml (AOR 2.21; 95% CI =1.62-3.09), emergency CS (AOR 2.16; 95% CI =1.61-2.51), duration of CS of > 1 h (AOR 2.12; 95% CI =1.67-2.79), no antenatal care (ANC) visits (AOR 2.05; 95% CI =1.66-2.37), duration of labor of ≥24 h (AOR 1.45; 95% CI =1.06-2.01), diabetes mellitus (DM) (AOR 1.37; 95% CI =1.02-2.1 3), obesity (AOR 1.34; 95% CI =0.95-1.84), high parity (AOR 1.27; 95% CI = 1.03-1.88), hypertension (AOR 1.19; 95% CI = 0.92-2.11) and gestational age of < 37 wks (AOR 1.12; 95% CI = 0.94-1.66). The mortality rate due to SSI was 1.33%.

CONCLUSIONS

The obtained incidence of SSI post CS in our study is relatively lower than other previous studies from developing countries. The development of SSI is associated with many factors rather than one factor. Management of SSI is maninly medical but surgical approach may be needed in some cases.

REGISTRATION

Local ethical committee (Registration number: MOBGYN0040).

Determinants of post cesarean section surgical site infection at public hospitals in Dire Dawa administration, Eastern Ethiopia: Case control study

INTRODUCTION

Post cesarean section surgical site infection increases both the duration of a patient's hospital stay and unplanned hospital costs. It can delays recovery, prolongs hospitalization, necessitates readmission, and adds to hospital bills and other morbidities as well as mortalities.

METHOD

Facility-based case-control study was conducted from 1st March to 20th April, 2019 among all the mother records enrolled from 1st January to 31st December, 2018 at Public hospitals in Dire Dawa administration. The records of the mothers' who had post-cesarean section surgical site infection (119) was extracted by a census and every three consecutive controls (357) for each case were collected by trained data collectors using a structured data extraction tool. Variables which had p-value <0.25 in bivariate analysis were considered as candidates for multivariable analysis. Statistical significance was declared at P-value ≤0.05 with adjusted odd ratio and 95% confidence interval in the multivariable logistic regression model.

RESULT

Age 20-34 years (AOR:5.4; 95%CI:2.35,12.7), age >35 years (AOR:8.9; 95%CI:1.8,43.9), ≥4 per vaginal examinations (AOR: 4.2; 95%CI:2.16,8.22), current history of Chorioamnionitis (AOR:5; 95%CI:1.05,23.9), previous history of cesarean section (AOR:6.2; 95%CI: 2.72,14.36), provision of antibiotics prophylaxis (AOR:3.2; 95%CI:1.81,5.62), perioperative HCT level <30% (AOR:6.9; 95%CI:3.45,14.1) and duration of rupture of membrane >12 hours (AOR:5.4; 95%CI:1.84,15.87) were the independent determinants of post-cesarean section surgical site infection.

CONCLUSION

Increased in age of the mother, higher number of per vaginal examination, having a history of chorioamnionitis, having previous history of cesarean section, not receiving antibiotics prophylaxis, lower perioperative hematocrit level and longer duration of rupture of membrane were statistically significant in multivariable analysis. Therefore; emphasis should be given for mothers who have higher age category, previous cesarean scar and history of choriamnionitis. In addition; provision of antibiotics should be comprehensive for all mothers undergoing cesarean section.

Surgical site infections following caesarean sections at Emirati teaching hospital: Incidence and implicated factors

The rate of delivery by caesarean sections is increasing globally and, therefore, the incidence of post-caesarean surgical site infections (SSIs) is probably also going to rise. The aim of the present study was to determine the incidence of SSIs after caesarean operations and to explore the factors associated with an increased risk of post-caesarean SSIs. A retrospective study was performed to assess all women who underwent caesarean sections from January 2016 to December 2017 at Al Ain Hospital in the United Arab Emirates (UAE). Backward multivariate logistic regression analysis was utilized to specify the variables that were significantly and independently connected with the development of post-caesarean SSIs. In total, 807 women underwent caesarean deliveries at the study site hospital during the two-year study period (January 2016-December 2017). Post-operative SSI was detected in 11 (1.4%) of the women who underwent caesarean operations. Of these, 11 (100%) women were diagnosed post-discharge, within 30 days after the date of the surgery. Multivariate logistic regression analysis showed that increased gestational age (P = 0.045) was significantly and independently associated with the development of post-caesarean SSI. Increased gestational age was found to be an independent predictor of post-caesarean SSIs. This identified risk factor should inform targeted health care policies to reduce the rate of SSIs.

Overview of risk factor and bacterial pattern in patient with surgical site infection after caesarean section in Ciptomangunkusumo Hospital from 2016 to 2018

Background

Caesarean section is one of the most commonly performed surgeries both in the hospital. The incidence of infections in cesarean section varies greatly around the world at 3–15%. SSI on is a multifactorial process that starts from the perioperative preparation, the patient, the type of surgery, the type of germ and other factors.

Aims

To determine the characteristics of patients, bacterial patterns, and risk factors for the incidence of SSI in Cipto Mangunkusumo National General Hospital in 2016–2018.

Method

This study was an observational study using a retrospective cohort method. The subject of this study were patients undergoing cesarean section in Cipto Mangunkusumo National General Hospital in 2016–2018 recruited using consecutive sampling method. Based on the data obtained, bivariate and multivariate analysis were conducted to determine the factors affecting post-caesarean SSI.

Results

A total of 2052 subjects were included in the study. There were 85 cases of surgical site infection (SSI) out of 2052 operations (4.14 %). A total of 85 SSI cases and 1967 control groups were included in the risk factor analysis. The most common bacteria found in surgical site infection culture were Staphylococcus aureus (16,5%), Klebsiella pneumoniae (12,9%), Escherichia coli (9,4%), Enterococcus faecalis (9,4%), and others (21,2%). Variables associated with SSI in this study is fetal distress (p=0,002; AOR = 2,265 CI 95 % 1,350–3,801) and BMI ≥30 kg/m² (p=0,028; AOR 1,824 CI 95% 1,066–3,121).

Conclusion

Factors influencing the incidence of SSI post cesarean section was fetal distress (p=0,002; AOR = 2,265 CI 95 % 1,350–3,801) and BMI ≥30 kg/m² (p=0,028; AOR 1,824 CI 95% 1,066–3,121).

Incidence of Surgical Site Infection and Factors Associated among Cesarean Deliveries in Selected Government Hospitals in Addis Ababa, Ethiopia, 2019

Background

One-third to two-thirds of operated patients in low-income countries acquire surgical site infection, which is nine times higher when compared to high-resource countries. Identifying the incidence and risk factors that contribute to surgical site infection following cesarean delivery is a step ahead for preventing and reducing the problem. Nonetheless, the distribution of the problem in Addis Ababa, where the rate of cesarean delivery is relatively high compared to other parts of the country, is under investigation.

Objective

The aim of this study is to assess the incidence of surgical site infection among cesarean deliveries and factors associated with it in selected governmental hospitals found in Addis Ababa, Ethiopia, in 2019.

Method

A hospital-based prospective cohort study design was employed to follow 175 women, who gave birth by cesarean delivery in selected government hospitals in Addis Ababa, from March 11 to April 9, 2019. Convenience sampling method was used to select study units from the randomly selected hospitals. Descriptive statistics were run for determining the rate of cesarean delivery surgical site infection. Presence and degree of association between outcome and independent variables were computed through bivariate logistic regression analysis and factors that had p < 0.2 significance level in the bivariate logistic regression analysis were considered in the multivariable logistic regression analysis.

Result

From 166 participants who completed 30-day follow-up, 25 (15%) of the participants developed surgical site infection. Age, gestational age, duration of operation, and ≥5 vaginal examinations showed a significant association with the outcome variable with AOR (95% CI) of ((AOR = 1.504, 95% CI: (1.170 – 1.933, p < 0.2 significance level in the bivariate logistic regression analysis were considered in the multivariable logistic regression analysis. p < 0.2 significance level in the bivariate logistic regression analysis were considered in the multivariable logistic regression analysis. p < 0.2 significance level in the bivariate logistic regression analysis were considered in the multivariable logistic regression analysis. p < 0.2 significance level in the bivariate logistic regression analysis were considered in the multivariable logistic regression analysis. Conclusion and recommendation. Surgical site infection rate is higher and certain associations lost due to small sample size. Further interventional studies with vast sample size are recommended.

Cost-effectiveness of TB treatments to Burmese and Laotian patients by Thai hospitals on the border with Myanmar and Laos

Purpose

The purpose of this paper is to estimate the cost-effectiveness of tuberculosis (TB) treatment and care in two Thai hospitals located on the borders with Myanmar and Laos.

Design/methodology/approach

A retrospective data collection was conducted to analyze all costs relevant to TB treatment and care from Mae Sai and Chiang Sean Hospitals. The cost related to TB treatment and care and the number of successful TB treatment from January 1 to December 31, 2017 were used for the calculation. The cost-effectiveness ratio (C/E) and the incremental cost-effectiveness ratio (ICER) were the outcomes.

Findings

In 2017, the total cost of the TB treatment and care program at Mae Sai Hospital was 482,728.94 baht for 57 TB patients. The cast per treated case per year was 8,468.93 baht. The C/E was 10,971.11 baht per successful TB treatment (44 successful cases). The total cost of the TB treatment and care program at Chiang Sean Hospital was 330,578.73 baht for 39 TB patients. The cost per treated case per year was 8,476.38 baht. The C/E was 22,038.58 baht per successful TB treatment (15 successful cases). The ICER was 5,246.56 baht. The Mae Sai Hospital model was more cost-effective in terms of the treatment and care provided to Burmese patients with TB than the Chiang Sean Hospital model for Laotian patients with TB.

Originality/value

To improve the cost-effectiveness of TB treatment and care programs for foreign patients in hospitals located on the Thai border, focus should be placed on patient follow-up at the community or village level.

Surgical site infection and associated factors among women underwent cesarean delivery in Debretabor General Hospital, Northwest Ethiopia: hospital based cross sectional study

Background

Cesarean section rates have been increasing dramatically during the past three decades and surgical site infections are becoming a leading cause of morbidity and mortality among women undergoing cesarean deliveries. However there is lack of sound evidence on both the magnitude of the problem and the associated factors in developing countries including Ethiopia. The purpose of this study was to assess proportion of surgical site infection and associated factors among women undergoing cesarean delivery in Debretabor General Hospital.

Methods

An institution based cross sectional study was conducted from May to December / 2017. All women delivered by cesarean section in Debretabor General Hospital during data collection period were our study population. Data were collected using Pre-tested, semi-structured questionnaire/ data extraction tool and post discharge phone follow up and analyzed using SPSS version 20. Logistic regression model was used to determine the association of independent variables with the outcome variable and odds ratios with 95% confidence interval were used to estimate the strength of the association.

Results

Proportion of surgical site infection among cesarean deliveries was about 8% (95%Cl: 5.4, 11.6). Pregnancy induced hypertension (AOR = 4.75, 95%CI: 1.62, 13.92), chorioaminitis (AOR = 4.37, 95%CI: 1.53, 12.50), midline skin incision (AOR = 5.19, 95% CI: 1.87, 14.37 and post-operative hemoglobin less than 11 g/deciliter (AOR = 5.28, 95%CI: 1.97, 14.18) were significantly associated with surgical site infection.

Conclusions

Pregnancy induced hypertension, chorioaminitis, midline skin incision and post-operative hemoglobin of less than 11 g/deciliter were independent factors associated with surgical site infection. Cesarean deliveries with concomitant pregnancy induced hypertension, chorioaminitis and post-operative anemia needs special care and follow up until surgical site infection is ruled out. It is also advisable to reduce generous midline skin incision and better replaced with pfannensteil incision.

[Incidence and risk factors of surgical site infection following caesarean section in a Tunisian maternity unit]

INTRODUCTION

Surgical site infection (SSI) is a major health concern and is one of the most common complications following caesarean section, with an incidence of 3%-15%. With the worldwide increase in caesarean section rates, the incidence of SSI is expected to increase in parallel. This study was designed to estimate the incidence and determine the risk factors of SSI after caesarean section in an Obstetrics and Gynaecology department in the Kairouan region in Tunisia.

METHODS

A prospective cohort study of all patients who delivered by caesarean section between December 2015 and February 2016 was conducted in the Kairouan Obstetrics and Gynaecology department. The clinical status of these women was monitored during the 30-day postoperative period (in the outpatients department, emergency room or they were contacted by phone). A multivariate logistic regression model was used to identify risk factors.

RESULTS

Of the 714 patients admitted for caesarean delivery, 636 (89%) were monitored for 30 days. Thirty-two of these women were diagnosed with SSI, corresponding to an incidence of 5% (95% CI = 3.3%; 6.6%). 87.5% (n = 28) of SSI were superficial and 12.5% (n = 4) were complex (deep and organ/space). Multivariate logistic regression analysis identified the woman's age as a risk factor of SSI (RR = 1.07 for every year increment, 95% CI = 1.007; 1.17), whereas drainage was identified as a protective factor (RR = 0.16, 95% CI = 0.05; 0.48).

CONCLUSION

This study identified the incidence and risk factors of postoperative infection following caesarean section. Prevention of these infections should be a public health priority.

Risk factors for surgical site infection after cesarean delivery: A case-control study

BACKGROUND

The cesarean delivery (CD) rate is increasing worldwide. Surgical site infection (SSI) incidence is likely to follow an upward trajectory. We examined the incidence and risk factors for SSI after CD.

METHODS

A case-control study of women who had a lower-segment CD during the study period was performed at Ireland's Cork University Maternity Hospital. Cases were patients who presented to the hospital with SSI and who met the criteria of the U.S. Centers for Disease Control and Prevention. Controls were randomly selected from the discharge register of CDs at a ratio of 2:1. Data were extracted from the medical records. A multivariable stepwise logistic regression model approach was used, and the results were expressed as adjusted odds ratios (aORs).

RESULTS

The SSI rate was 2%. The greatest contribution to risk of SSI was associated with maternal obesity (aOR, 4.76; 95% confidence interval [CI], 2.00-11.32) and hypertensive disorders (aOR, 6.67; 95% CI, 1.54-28.99]. There was also an increased risk for women who underwent an emergency CD (aOR, 3.50; 95% CI, 1.09-11.30), for women who had ≥5 vaginal examinations (aOR, 3.24; 95% CI, 0.92-11.41), and for women without hypertensive disorders who delivered a baby weighing <3,500 g (aOR, 2.18; 95% CI, 1.08-4.37).

CONCLUSIONS

Obesity, hypertensive disorders, emergency CD, and multiple vaginal examinations were independent risk factors for SSI after CD.

The efficacy of ampicillin compared with ceftriaxone on preventing cesarean surgical site infections: an observational prospective cohort study

Background

Cesarean surgical site infections (SSIs) can be prevented by proper preoperative antibiotic prophylaxis. Differences in antibiotic selection in clinical practice exist according to obstetricians’ preferences despite clear guidelines on preoperative antibiotic prophylaxis. This study aimed to compare the efficacy of ampicillin and ceftriaxone in preventing cesarean SSIs.

Methods

The observational prospective cohort study was conducted at a tertiary hospital in Thailand from 1 January 2007 to 31 December 2012. Propensity scores for ceftriaxone prophylaxis were calculated from potential influencing confounders. The cesarean SSI rates of the ceftriaxone group vs. those of the ampicillin prophylactic group were estimated by multilevel mixed-effects Poisson regression nested by propensity score.

Results

Data of 4149 cesarean patients were collected. Among these, 911 patients received ceftriaxone whereas 3238 patients received ampicillin as preoperative antibiotic prophylaxis. The incidence of incisional SSIs was (0.1% vs. 1.2%; p = 0.001) and organ space SSIs was (1.2% vs. 2.9%; p = 0.003) in the ceftriaxone group compared with the ampicillin group. After adjusting for confounders, the rate ratios of incisional and organ/space SSIs in the ceftriaxone compared with the ampicillin group did not differ (RR, 0.23; 95% CI 0.03–1.78), and (RR, 1.62; 95% CI 0.83–3.18), respectively.

Conclusion

These data indicate no difference exists between ampicillin and ceftriaxone to prevent SSIs after cesarean section. Ampicillin may be used as antibiotic prophylaxis in cesarean section.

Electronic supplementary material

The online version of this article (10.1186/s13756-018-0304-6) contains supplementary material, which is available to authorized users.

A Prognostic Scoring Tool for Cesarean Organ/Space Surgical Site Infections: Derivation and Internal Validation

BACKGROUND

Organ/space surgical site infections (SSIs) are serious complications after cesarean delivery. However, no scoring tool to predict these complications has yet been developed. This study sought to develop and validate a prognostic scoring tool for cesarean organ/space SSIs.

METHODS

Data for case and non-case of cesarean organ/space SSI between January 1, 2007 and December 31, 2012 from a tertiary care hospital in Thailand were analyzed. Stepwise multivariable logistic regression was used to select the best predictor combination and their coefficients were transformed to a risk scoring tool. The likelihood ratio of positive for each risk category and the area under receiver operating characteristic (AUROC) curves were analyzed on total scores. Internal validation using bootstrap re-sampling was tested for reproducibility.

RESULTS

The predictors of 243 organ/space SSIs from 4,988 eligible cesarean delivery cases comprised the presence of foul-smelling amniotic fluid (four points), vaginal examination five or more times before incision (two points), wound class III or greater (two points), being referred from local setting (two points), hemoglobin less than 11 g/dL (one point), and ethnic minorities (one point). The likelihood ratio of cesarean organ/space SSIs with 95% confidence interval among low (total score of 0-1 point), medium (total score of 2-5 points), and high risk (total score of ≥6 points) categories were 0.11 (0.07-0.19), 1.03 (0.89-1.18), and 13.25 (10.87-16.14), respectively. Both AUROCs of the derivation and validation data were comparable (87.57% versus 86.08%; p = 0.418).

CONCLUSIONS

This scoring tool showed a high predictive ability regarding cesarean organ/space SSIs on the derivation data and reproducibility was demonstrated on internal validation. It could assist practitioners prioritize patient care and management depending on risk category and decrease SSI rates in cesarean deliveries.

Incidence and risk factors for surgical site infections in obstetric and gynecological surgeries from a teaching hospital in rural India

BACKGROUND

Surgical site infections (SSI) are one of the most common healthcare associated infections in the low-middle income countries. Data on incidence and risk factors for SSI following surgeries in general and Obstetric and Gynecological surgeries in particular are scare. This study set out to identify risk factors for SSI in patients undergoing Obstetric and Gynecological surgeries in an Indian rural hospital.

METHODS

Patients who underwent a surgical procedure between September 2010 to February 2013 in the 60-bedded ward of Obstetric and Gynecology department were included. Surveillance for SSI was based on the Centre for Disease Control (CDC) definition and methodology. Incidence and risk factors for SSI, including those for specific procedure, were calculated from data collected on daily ward rounds.

RESULTS

A total of 1173 patients underwent a surgical procedure during the study period. The incidence of SSI in the cohort was 7.84% (95% CI 6.30-9.38). Majority of SSI were superficial. Obstetric surgeries had a lower SSI incidence compared to gynecological surgeries (1.2% versus 10.3% respectively). The risk factors for SSI identified in the multivariate logistic regression model were age (OR 1.03), vaginal examination (OR 1.31); presence of vaginal discharge (OR 4.04); medical disease (OR 5.76); American Society of Anesthesia score greater than 3 (OR 12.8); concurrent surgical procedure (OR 3.26); each increase in hour of surgery, after the first hour, doubled the risk of SSI; inappropriate antibiotic prophylaxis increased the risk of SSI by nearly 5 times. Each day increase in stay in the hospital after the surgery increased the risk of contacting an SSI by 5%.

CONCLUSIONS

Incidence and risk factors from prospective SSI surveillance can be reported simultaneously for the Obstetric and Gynecological surgeries and can be part of routine practice in resource-constrained settings. The incidence of SSI was lower for Obstetric surgeries compared to Gynecological surgeries. Multiple risk factors identified in the present study can be helpful for SSI risk stratification in low-middle income countries.

Incidence of surgical site infection following caesarean section: a systematic review and meta-analysis protocol

INTRODUCTION

Caesarean section (CS) rates have increased globally during the past three decades. Surgical site infection (SSI) following CS is a common cause of morbidity with reported rates of 3-15%. SSI represents a substantial burden to the health system including increased length of hospitalisation and costs of postdischarge care. The definition of SSI varies with the postoperative follow-up period among different health systems, resulting in differences in the reporting of SSI incidence. We propose to conduct the first systematic review and meta-analysis to determine the pooled estimate for the overall incidence of SSI following CS.

METHODS AND ANALYSIS

We will perform a comprehensive search to identify all potentially relevant published studies on the incidence of SSI following CS reported from 1992 in the English language. Electronic databases including PubMed, CINAHL, EMBASE and Scopus will be searched using a detailed search strategy. Following study selection, full-text paper retrieval, data extraction and synthesis, we will appraise study quality and risk of bias and assess heterogeneity. Incidence data will be combined where feasible in a meta-analysis using Stata software and fixed-effects or random-effects models as appropriate. This systematic review will be reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.

ETHICS AND DISSEMINATION

Ethical approval is not required as this review will use published data. The review will evaluate the overall incidence of SSI following CS and will provide the first quantitative estimate of the magnitude of SSI. It will serve as a benchmark for future studies, identify research gaps and remaining challenges, and emphasise the need for appropriate prevention and control measures for SSI post-CS. A manuscript reporting the results of the systematic review and meta-analysis will be submitted to a peer-reviewed journal and presented at scientific conferences.

TRIAL REGISTRATION NUMBER

CRD42015024426.