The association between family history of hypertension and diabetic kidney disease in patients with diabetes: a cross-sectional study.

Family history of hypertension was significantly associated with higher odds of diabetic kidney disease in patients with type 2 diabetes after propensity score matching.

• PSM analysis yielded an odds ratio of 2.57 (95% CI: 1.48–4.46, P = 0.001)
• After PSM, 386 patients were included, 193 per group
• The final analytical dataset comprised 1,612 individuals with T2D: 1,419 without family history of hypertension and 193 with family history of hypertension
• Propensity score matching was used to mitigate potential confounding factors from baseline clinical features across comparative groups

The association between family history of hypertension and diabetic kidney disease remained consistent across multiple weighting approaches.

• Inverse probability of treatment weighting yielded OR = 2.18 (95% CI: 1.52–3.13, P < 0.001)
• Similar estimates were obtained using other weighting approaches beyond IPTW
• Key findings maintained statistical significance throughout sensitivity testing
• Multivariable logistic regression and E-value analysis were applied to evaluate robustness against confounding and missingness
• PSM was also performed on the dataset after multiple imputation to assess robustness to missing data

The study used a cross-sectional design with propensity score matching in a sample of 1,612 patients with type 2 diabetes.

• Participants were grouped according to presence or absence of a family history of hypertension
• 1,419 patients had no family history of hypertension and 193 had a family history of hypertension
• Multiple imputation was used prior to a secondary PSM analysis to handle missing data
• The cross-sectional design prevents establishment of causality or temporal direction

The authors concluded that prospective studies are needed to determine whether familial hypertension contributes to diabetic kidney disease development and progression.

• Causality and temporal direction cannot be established due to the cross-sectional design
• The study highlights the potential importance of family history of hypertension for risk stratification and early intervention in T2D patients
• The contribution of family history of hypertension to DKD pathogenesis was described as 'unclear' prior to this investigation