Panadeekarn Panjawatanan

Short Sleep Duration and Risk of Nonalcoholic Fatty Liver Disease: A Systematic Review and Meta-analysis.

Nonalcoholic fatty liver disease (NAFLD) is one of the most common causes of chronic liver disease worldwide. Several studies have suggested that short sleep duration could be a risk factor for NAFLD. However, results of those reports are inconsistent. This meta‐analysis was conducted with an attempt to summarize all available data.

Association of coffee consumption and chronic kidney disease: A meta-analysis

The risk of chronic kidney disease (CKD) in individuals who regularly drink coffee is controversial. The aim of this meta‐analysis was to evaluate the association between coffee consumption and CKD.

Hyperuricaemia and risk of nonalcoholic fatty liver disease: A meta-analysis.

The association between hyperuricaemia and nonalcoholic fatty liver disease (NAFLD), one of the leading causes of cirrhosis worldwide, has been demonstrated in recent epidemiological studies. This meta‐analysis was conducted to summarize all available data and to estimate the risk of NAFLD among subjects with hyperuricaemia.

Proton pump inhibitors and risk of dementia

BACKGROUND Proton pump inhibitors (PPIs) are one of the most commonly prescribed medications. Recent studies have raised a concern over increased risk of dementia among PPIs users but the results of those studies were inconsistent. We conducted this systematic review and meta-analysis to summarize all available data. METHODS A literature search was performed in MEDLINE and EMBASE database from inception to April 2016. Observational studies that reported risk of dementia among PPIs users compared with non-users were included. Point estimates were extracted from individual studies and pooled risk ratios (RR) with 95% confidence intervals (CI) were calculated using a random-effect, generic inverse variance method. RESULTS Four studies were included in the analysis. Pooled RR of dementia among PPIs users compared with non-users was 1.08 (95% CI, 0.82-1.43). Sensitivity analysis including only cohort studies demonstrated a higher risk with pooled RR of 1.44 (95% CI, 1.36-1.52). CONCLUSIONS Our study demonstrated an increased risk of dementia among PPIs users. Whether this association is causal requires further investigations.

Hepatitis B virus infection and risk of gallstones: a systematic review and meta-analysis.

Background/objectives Gallstone disease and its complications are common, particularly in Western populations. Recent studies have reported a significantly increased risk of gallstones among hepatitis C virus-infected patients. However, the data on patients with hepatitis B virus (HBV) infection are still limited. This meta-analysis was carried out with the aim of summarizing all available evidence. Patients and methods A literature search was performed using MEDLINE and the EMBASE database from inception to May 2016. Studies that reported relative risks, odd ratios, or hazard ratios comparing the risk of gallstones among HBV-infected patients versus patients without HBV infection were included. Pooled odds ratio (OR) and 95% confidence interval (CI) were calculated using a random-effect, generic inverse-variance method. Results Nine studies fulfilled our eligibility criteria and were included in the analysis. We found no significant association between HBV infection and the risk of gallstones, with a pooled OR of 1.10 (95% CI, 0.91–1.33). The statistical heterogeneity was moderate, with an I2 of 69%. Subgroup analysis was carried out. The pooled OR of cross-sectional studies was 1.01 (95% CI, 0.91–1.12; I2 0%), whereas the pooled OR of case–control studies was 1.53 (95% CI, 0.85–2.74; I2 80%). Conclusion A significant association between HBV infection and the risk of gallstones was not observed in this study.

Celiac disease and the risk of kidney diseases: A systematic review and meta-analysis

BACKGROUND/OBJECTIVES Previous epidemiologic studies attempting to demonstrate the risk of kidney diseases among patients with celiac disease (CD) have yielded inconsistent results. This meta-analysis was conducted with the aims to summarize all available evidence. METHODS A literature search was performed using MEDLINE and EMBASE from inception to May 2016. Studies that provided relative risks, odd ratios, or hazard ratios examining the risk of kidney diseases among patients with CD versus individuals without CD were included. Pooled risk ratios (RR) and 95% confidence interval (CI) were calculated using a random-effect, generic inverse variance method. RESULTS Eight studies met our eligibility criteria and were included in our analysis. A pooled RR of overall kidney diseases in patients with CD was 2.01 (95% CI, 1.44-2.81, I2=76%). The pooled RR of end-stage renal disease in patients with CD was 2.57 (95% CI, 2.03-3.24). Subgroup analyses showed that significant risks were increased for diabetic nephropathy (pooled RR of 1.49, 95% CI, 1.09-2.02) and IgA nephropathy (pooled RR of 2.62, 95% CI, 1.27-5.42) in patients with CD. CONCLUSIONS Our study demonstrates a significantly increased risk of kidney diseases among patients with CD. These findings may influence clinical management and primary prevention of kidney diseases in patients with CD.

Association between smoking and risk of primary sclerosing cholangitis: A systematic review and meta-analysis:

Background/Objectives Studies have suggested that smokers may have a lower risk of primary sclerosing cholangitis (PSC) although the results have been inconsistent. This systematic review and meta-analysis was conducted to summarize all available data to better characterize this association. Methods A comprehensive literature review was conducted using Medline and Embase databases through January 2018 to identify all studies that compared the risk of PSC among current/former smokers versus nonsmokers. Effect estimates from each study were extracted and combined using the random-effect, generic inverse variance method of DerSimonian and Laird. Results Seven case-control studies with 2,307,393 participants met the eligibility criteria and were included in the meta-analysis. The risk of PSC among current smokers and former smokers was significantly lower than nonsmokers with the pooled odds ratio of 0.31 (95% CI, 0.18–0.53) and 0.52 (95% CI, 0.44–0.61), respectively. The risk remained significantly lower among current smokers and former smokers compared with nonsmokers even when only patients with PSC without inflammatory bowel disease were included. Conclusions A significantly decreased risk of PSC among current and former smokers was demonstrated in this study.

Hepatitis C virus infection and risk of osteoporosis: A meta-analysis

Background/Aims: Hepatitis C virus (HCV) infection is one of the most common infections worldwide. Several epidemiologic studies have suggested that patients with HCV infection might be at an increased risk of osteoporosis. However, the data on this relationship remains inconclusive. This meta-analysis was conducted with the aim to summarize all available evidence. Materials and Methods: A literature search was performed using MEDLINE and EMBASE databases from inception to June 2016. Studies that reported relative risks, odd ratios (OR), or hazard ratios comparing the risk of osteoporosis among HCV-infected patients versus those without HCV infection were included. Pooled OR and 95% confidence interval (CI) were calculated using a random-effect, generic inverse variance method. Results: Four studies met our eligibility criteria and were included in the analysis. We found a higher risk of osteoporosis among patients with chronic HCV with OR of 1.65 (95% CI: 0.98–2.77). Sensitivity analysis including only studies with higher quality yielded a higher OR, and the result was statistically significant (OR: 2.47; 95% CI: 1.03–5.93). Conclusions: Our study demonstrated a higher risk of osteoporosis among HCV-infected patients. Further studies are required to clarify how this risk should be addressed in clinical practice.

Association between gastroesophageal reflux disease and nonalcoholic fatty liver disease: A meta-analysis

Background/Aim: The relationship between gastroesophageal reflux disease (GERD) and nonalcoholic fatty liver disease (NAFLD) has been demonstrated in recent epidemiologic studies although the results were inconsistent. This meta-analysis was conducted to summarize all available data and to estimate the risk of NAFLD among patients with GERD. Materials and Methods: Comprehensive literature review was conducted using MEDLINE and EMBASE database from inception through November 2016, to identify studies that compared the risk of NAFLD among patients with GERD versus those without GERD. Effect estimates from each study were extracted and combined using the random-effect, generic inverse variance method of DerSimonian and Laird. Results: Eight studies (four cross-sectional studies and four case–control studies) with 31,322 participants met the eligibility criteria and were included in the meta-analysis. The risk of NAFLD among patients with GERD was significantly higher than those without GERD with the pooled odds ratio of 2.07 (95% confidence interval, 1.54–2.79). The statistical heterogeneity was high with an I2 of 87%. Conclusions: A significantly increased risk of NAFLD among patients with GERD was observed in this meta-analysis.

Insomnia and risk of nonalcoholic fatty liver disease: A systematic review and meta-analysis

Aim: This sudy aims to investigate the association between insomnia or excessive daytime sleepiness (EDS) and risk of nonalcoholic fatty liver disease (NAFLD). Methods: We searched published studies indexed in MEDLINE and EMBASE database from inception to December 2015. Studies that reported odds ratios (ORs), risk ratios, hazard ratios or standardized incidence ratio with 95% confidence intervals (CI) comparing the risk of NAFLD among participants who had insomnia or EDS versus those without insomnia or EDS were included. Pooled ORs and 95% CI were calculated using a random-effect, generic inverse variance method of DerSimonian and Laird. Cochrans Q test and I2 statistic were used to determine the between-study heterogeneity. Results: Our search strategy yielded 2117 potentially relevant articles (781 articles from MEDLINE and 1336 articles from EMBASE). After comprehensive review, seven studies (three cross-sectional studies and four case–control studies) were found to be eligible and were included in the meta-analysis. The risk of NAFLD in participants who had insomnia was significantly higher with the pooled OR of 1.13 (95% CI, 1.00–1.27). The statistical heterogeneity was moderate with an I2 of 62%. Elevated risk of NAFLD was also observed among participants with EDS even though the 95% CI was wider and did not reach statistical significance (pooled OR 2.21; 95% CI, 0.84–5.82). The statistical heterogeneity was moderate with an I2 of 62%. Conclusions: Our study demonstrated an increased risk of NAFLD among participants who had insomnia or EDS. Whether this association is causal needs further investigations.