Table 1. Characteristics of never users and ever users of sitagliptin.

Variable	Never users (n = 39195)		Ever users (n = 39195)		P-value	SD
	n	%	n	%
Age (years)	55.81 ± 10.16		56.19 ± 9.97		< 0.0001	3.83
Diabetes duration (years)	6.60 ± 2.74		6.63 ± 2.79		0.1764	0.53
Sex (men)	21331	54.42	21282	54.30	0.7253	−0.16
Hypertension	30121	76.85	30434	77.65	0.0077	1.90
Chronic obstructive pulmonary disease	16590	42.33	16639	42.45	0.7232	0.20
Stroke	9056	23.10	9086	23.18	0.7994	0.14
Nephropathy	8821	22.51	8940	22.81	0.3100	0.81
Ischemic heart disease	14965	38.18	14881	37.97	0.5367	−0.37
Peripheral arterial disease	8005	20.42	8162	20.82	0.1658	1.09
Eye disease	12766	32.57	12785	32.62	0.8849	0.12
Obesity	2955	7.54	2826	7.21	0.0779	−1.47
Dyslipidemia	32800	83.68	32978	84.14	0.0836	1.39
Acute pancreatitis	198	0.51	201	0.51	0.8803	0.10
Tobacco abuse	1405	3.58	1491	3.80	0.1034	1.21
Alcohol−related diagnoses	2134	5.44	2071	5.28	0.3179	−0.68
Gingival and periodontal diseases	35017	89.34	34974	89.23	0.6195	−0.38
Oral mucosal lesions	866	2.21	841	2.15	0.5407	−0.53
Statin	27403	69.91	27767	70.84	0.0044	2.11
Fibrate	16169	41.25	16420	41.89	0.0689	1.47
Angiotensin converting enzyme inhibitor/angiotensin receptor blocker	27046	69.00	27534	70.25	0.0002	2.68
Calcium channel blocker	20072	51.21	20550	52.43	0.0006	2.47
Sulfonylurea	21967	56.05	23149	59.06	< 0.0001	5.85
Metformin	29817	76.07	30018	76.59	0.0912	0.82
Insulin	2350	6.00	2186	5.58	0.0121	−2.23
Acarbose	4444	11.34	4257	10.86	0.0335	−1.60
Pioglitazone	2588	6.60	2577	6.57	0.8742	0.22
Rosiglitazone	1770	4.52	1453	3.71	< 0.0001	−4.07
Aspirin	21560	55.01	21938	55.97	0.0066	1.89
Ticlopidine	1253	3.20	1323	3.38	0.1608	0.99
Clopidogrel	3098	7.90	3016	7.69	0.2748	−0.81
Dipyridamole	12029	30.69	12387	31.60	0.0058	2.10

Age and diabetes duration are expressed as mean ± standard deviation

SD: standardized difference