Pharmacological primary and secondary cardiovascular prevention among diabetic patients in a multiethnic general practice population: still room for improvements

Table 4 Potential overtreatment in T2DM patients receiving pharmacological cardiovascular prevention by CVD status and ethnicity

Characteristics^a	Total	Norwegians	South Asians	Other	p^b
Primary cardiovascular prevention in 1273 patients without known CVD
Proportions of patients on glucose lowering therapy, n/N (%)
HbA1c < 6.0%	82/899 (9.1)	62/563 (11.0)	7/202 (3.5)	13/134 (9.7)	0.006
Proportions of patients on anti-hypertensive therapy, n/N (%)
SBP < 130 mmHg	154/672 (22.9)	98/514 (19.1)	36/90 (40.0)	20/68 (29.4)	<0.001
DBP < 65 mmHg	25/671 (3.7)	18/514 (3.5)	6/89 (6.7)	1/68 (1.5)	0.193
Secondary cardiovascular prevention in 380 patients with known CVD
Proportions of patients on glucose lowering therapy, n/N (%)
HbA1c < 6.0%	25/280 (8.9)	24/209 (11.5)	1/52 (1.9)	0/19 (0.0)	0.035
Proportions of patients on anti-hypertensive therapy, n/N (%)
SBP < 130 mmHg	76/319 (23.8)	55/262 (21.0)	17/40 (42.5)	4/17 (23.5)	0.012
DBP < 65 mmHg	26/319 (8.2)	16/262 (6.1)	6/40 (15.0)	4/17 (23.5)	0.009

^a CVD: cardiovascular disease. Potential overtreatment with glucose-lowering therapy if HbA1c < 6.0%, with antihypertensive therapy if systolic blood pressure (SBP) < 130 mmHg or diastolic blood pressure (DBP) < 65 mmHg. n: number of patients on pharmacological therapy with HbA1c < 6.0%, SPB < 130 mmHg or DBP < 65 mmHg, N: valid cases.
^b P-values. Chi-square tests were applied to compare proportions between ethnic groups.

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