Comparison of the glycemic control of the normo- and hypertensive Chinese patients with type 2 diabetes in a general outpatient clinic in Hong Kong

ObjectivesTo describe and compare glycemic control between normo- and hypertensive type 2 diabetic Chinese patients in outpatient setting.MethodsThis retrospective cross-sectional study was performed by retrieving the records of 548 Chinese type 2 diabetic patients. HbA1c ≦ 6.5% was regarded as glycemic good control. Linear and logistic regressions were used to compare mean HbA1c levels and the proportions with good glycemic control between hypertensive and normotensive patients while controlling for confounders.ResultsThe means HbA1c for all diabetic, hypertensive and normotensive patients were 7.70, 7.55 and 8.01, respectively. The normotensive group had a significant higher HbA1c (p = 0.004). Significantly higher HbA1c was associated with lower age (CI of β: −0.024 to −0.001, p = 0.039), female gender (CI of β: 0.039–0.552, p = 0.024) and medication use (CI of β: 0.577–1.250, p < 0.001).The proportions with good glycemic control for the all diabetic, hypertensive, normotensive subjects were 0.235, 0.249 and 0.207, respectively. No significant difference was shown for the two groups’proportions (p = 0.283). Lower proportions of good control were shown in females (CI of OR: 0.398–0.905, p = 0.015) and those on medication (CI of OR: 0.211–0.543, p < 0.001) by stepwise logistic regression.ConclusionThe hypertensive diabetic patients had better glycemic control than the normotensives.