There was substantial agreement in the questions about loop diuretics ( k = 0.608 , CI 0.432-0 .784 , p < 0.001 ) , confidence in managing hypertension ( k = 0.628 , 95 % CI 0.452-0 .804 , p < 0.001 ) , diastolic blood pressure treatment thresholds in CKD ( k = 0.608 , 95 % CI 0.436-0 .780 , p < 0.001 ) and the rate of decline of eGFR that would prompt referral ( k = 0.764 , 95 % CI 0.603-0 .925 , p < 0.001 ) .