Keyword: Screening
2 results found.
Congress Abstract
Central Asian Journal of Nephrology, 2(2, Suppl. 1), 2026, cajn_A13, https://doi.org/10.63946/cajn/19510
ABSTRACT:
Background: Evidence on chronic kidney disease (CKD) in Central Asia remains limited, particularly for community-based detection using both kidney function and albuminuria. This study assessed the frequency of CKD markers among adults in three cities of Kazakhstan and examined whether point-of-care (POC) creatinine testing could support community screening.
Methods: Adults were recruited through community screening events in Astana, Ust-Kamenogorsk, and Turkestan. Laboratory serum creatinine was used to calculate eGFR with the CKD-EPI 2021 equation, and urine albumin-to-creatinine ratio (ACR) was measured to identify albuminuria. Participants were classified as having screening-detected CKD markers if eGFR was <60 mL/min/1.73 m² and/or ACR was ≥30 mg/g on a single assessment. Multivariable logistic regression was used to examine associated factors. Capillary POC creatinine was compared with laboratory creatinine, and its diagnostic performance for identifying eGFR <60 mL/min/1.73 m² was evaluated.
Results: Of 1,022 participants with complete laboratory kidney measurements, 100 (9.8%; 95% CI 8.1–11.8) had screening-detected CKD markers. Albuminuria was identified in 7.7%, while reduced eGFR was present in 3.4%. Among participants with CKD markers, 52.0% reported no previous awareness of abnormal kidney findings. Hypertension was associated with approximately twice the adjusted odds of CKD markers (aOR 2.05, 95% CI 1.24–3.41). POC and laboratory creatinine were available for 987 participants. POC creatinine exceeded laboratory values by an average of 18.5 µmol/L, with wide limits of agreement. For identifying laboratory-defined reduced eGFR, POC-derived eGFR had 84.4% sensitivity, 83.4% specificity, 14.5% positive predictive value, 99.4% negative predictive value, and an AUC of 0.919.
Conclusions: CKD markers were detected in roughly one in ten screened adults, and albuminuria accounted for a substantial proportion of identified abnormalities. The high proportion of previously unrecognized findings supports greater use of combined eGFR and ACR assessment in CKD case-finding. POC creatinine may be useful for triage because of its strong rule-out performance, but positive findings should be confirmed with standardized laboratory testing.
Methods: Adults were recruited through community screening events in Astana, Ust-Kamenogorsk, and Turkestan. Laboratory serum creatinine was used to calculate eGFR with the CKD-EPI 2021 equation, and urine albumin-to-creatinine ratio (ACR) was measured to identify albuminuria. Participants were classified as having screening-detected CKD markers if eGFR was <60 mL/min/1.73 m² and/or ACR was ≥30 mg/g on a single assessment. Multivariable logistic regression was used to examine associated factors. Capillary POC creatinine was compared with laboratory creatinine, and its diagnostic performance for identifying eGFR <60 mL/min/1.73 m² was evaluated.
Results: Of 1,022 participants with complete laboratory kidney measurements, 100 (9.8%; 95% CI 8.1–11.8) had screening-detected CKD markers. Albuminuria was identified in 7.7%, while reduced eGFR was present in 3.4%. Among participants with CKD markers, 52.0% reported no previous awareness of abnormal kidney findings. Hypertension was associated with approximately twice the adjusted odds of CKD markers (aOR 2.05, 95% CI 1.24–3.41). POC and laboratory creatinine were available for 987 participants. POC creatinine exceeded laboratory values by an average of 18.5 µmol/L, with wide limits of agreement. For identifying laboratory-defined reduced eGFR, POC-derived eGFR had 84.4% sensitivity, 83.4% specificity, 14.5% positive predictive value, 99.4% negative predictive value, and an AUC of 0.919.
Conclusions: CKD markers were detected in roughly one in ten screened adults, and albuminuria accounted for a substantial proportion of identified abnormalities. The high proportion of previously unrecognized findings supports greater use of combined eGFR and ACR assessment in CKD case-finding. POC creatinine may be useful for triage because of its strong rule-out performance, but positive findings should be confirmed with standardized laboratory testing.
Original Article
Central Asian Journal of Nephrology, 1(2), 2025, cajn007, https://doi.org/10.63946/cajn/17084
ABSTRACT:
Background: Chronic kidney disease (CKD) is a major global health challenge, yet population-based data from Central Asia are scarce. We conducted a population-based screening study to assess kidney function distribution and associated risk factors in Astana, Kazakhstan.
Methods: In March 2024, 636 adults were screened through convenience sampling at four major institutions in Astana. After excluding incomplete data, 569 participants were analyzed. Demographic, lifestyle, and clinical information were collected, and serum creatinine was used to estimate glomerular filtration rate (eGFR). Reduced renal function was defined as eGFR <90 mL/min/1.73 m². Group comparisons and logistic regression analyses were performed to identify risk factors for reduced renal function.
Results: The median age of participants was 46 years (IQR 33–55), and 79.8% were women. Median eGFR was 92.8 (IQR 79.8–111.3) mL/min/1.73 m²; 54.1% had eGFR ≥90, 42.4% had eGFR 60–89, and 3.5% had eGFR 45–59. Reduced renal function was more common among older adults, females and those with hypertension and heart failure. In multivariable analysis, older age and female sex were independent predictors of reduced renal function. Awareness was low: only 15.0% of individuals with eGFR 45–59 reported having CKD.
Conclusion: This study provides the population-based evidence on kidney function in Astana, Kazakhstan. Reduced renal function was common, particularly among older adults. Findings highlight the importance of population-based screening and targeted prevention strategies to address kidney health in Kazakhstan.
Methods: In March 2024, 636 adults were screened through convenience sampling at four major institutions in Astana. After excluding incomplete data, 569 participants were analyzed. Demographic, lifestyle, and clinical information were collected, and serum creatinine was used to estimate glomerular filtration rate (eGFR). Reduced renal function was defined as eGFR <90 mL/min/1.73 m². Group comparisons and logistic regression analyses were performed to identify risk factors for reduced renal function.
Results: The median age of participants was 46 years (IQR 33–55), and 79.8% were women. Median eGFR was 92.8 (IQR 79.8–111.3) mL/min/1.73 m²; 54.1% had eGFR ≥90, 42.4% had eGFR 60–89, and 3.5% had eGFR 45–59. Reduced renal function was more common among older adults, females and those with hypertension and heart failure. In multivariable analysis, older age and female sex were independent predictors of reduced renal function. Awareness was low: only 15.0% of individuals with eGFR 45–59 reported having CKD.
Conclusion: This study provides the population-based evidence on kidney function in Astana, Kazakhstan. Reduced renal function was common, particularly among older adults. Findings highlight the importance of population-based screening and targeted prevention strategies to address kidney health in Kazakhstan.