TABLE 2.

Patient Characteristics for Patients With and Without Longitudinal A1C Data

With A1CWithout A1CAll PatientsDifference of Means, 95% CIP
Patients, n3976115NANA
Age, mean ± SD, years36.4 ± 9.337.6 ± 9.337.1 ± 9.31.2 (–2.4 to 4.8)0.51
Weight at IUD placement, mean ± SD, lb239.7 ± 70.9259.0 ± 87.6252.2 ± 82.019.3 (–12.8 to 51.4) 2.00.24
BMI at IUD placement, mean ± SD, kg/m241.5 ± 11.143.5 ± 13.542.8 ± 12.7(–3.0 to 7.0)0.43
Nulligravid7 (17.9)11 (14.5)18 (15.7)3.4 (–11.0 to 20.5)0.64
Nulliparous10 (25.6)17 (22.3)27 (23.5)3.3 (–13.4 to 22.0)0.69
Insurance status
 Private12 (30.8)31 (40.8)43 (37.4)10.0 (–10.2 to 28.2)0.30
 Public21 (53.8)33 (43.4)54 (46.9)10.4 (–10.1 to 30.1)0.29
 Self-pay2 (5.1)5 (6.6)7 (6.1)1.5 (–11.5 to 10.8)0.75
 Unknown4 (10.3)7 (9.2)11 (9.6)1.1 (–10.4 to 16.1)0.85
Time of placement
 Interval clinic visit18 (46.1)33 (43.4)51 (44.4)2.7 (–17.3 to 22.9)0.78
 Operating room10 (25.6)20 (26.3)30 (26.1)0.8 (–18.3 to 17.7)0.94
 Postpartum9 (23.1)14 (18.4)23 (20)4.7 (–11.2 to 22.8)0.55
 Vaginal delivery3 (7.7)6 (7.9)9 (7.8)0.2 (–13.9 to 10.7)0.97
 Caesarean section6 (15.4)8 (10.5)14 (12.2)4.9 (–8.3 to 21.1)0.45
 Post-abortion1 (2.6)5 (6.6)6 (5.2)4.0 (–7.8 to 12.5)0.36
 Replacement1 (2.6)4 (5.3)5 (4.3)2.7 (–8.9 to 10.7)0.51
Diabetes control pre-IUD placement
 Diabetic eye disease5 (12.8)3 (3.9)8 (6.9)8.9 (–2.2 to 23.8)0.08
 Renal complications3 (7.7)2 (2.6)5 (4.3)5.1 (–3.8 to 18.5)0.21
 Vascular insufficiency1 (2.6)2 (2.6)3 (2.6)(–11.2 to 7.0)1.00
 Neuropathy3 (7.7)0 (0.0)3 (7.7)7.7 (–0.24 to 19.48)0.02
Indication
 Contraception20 (51.3)45 (59.2)65 (56.5)0.6 (–19.5 to 20.8)0.95
 Menorrhagia18 (46.1)29 (38.2)47 (40.9)7.9 (–12.1 to 27.8)0.42
 Pain treatment1 (2.6)1 (1.3)2 (1.7)1.3 (–5.0 to 12.3)0.61
 Cancer prophylaxis0 (0.0)1 (1.3)1 (0.9)1.3 (–7.8 to 7.1)0.48
Medications at IUD placement
 ACE inhibitors12 (30.8)16 (21.1)28 (24.3)9.7 (–7.8 to 28.5)0.25
 Angiotensin receptor blockers4 (10.3)11 (14.5)15 (13.0)4.2 (–11.4 to 16.6)0.52
 β-Blockers6 (15.4)11 (14.5)17 (14.8)0.9 (–12.9 to 17.6)0.90
 Calcium channel blockers5 (12.8)6 (7.9)11 (9.6)4.9 (–7.1 to 20.3)0.40
 Diuretics13 (33.3)22 (28.9)35 (30.4)4.4 (–13.9 to 23.9)0.63
 Insulin20 (51.3)26 (34.2)46 (40.0)17.1 (–3.2 to 36.5)0.08
 Statins16 (41.0)19 (25.0)35 (30.4)16.0 (–3.1 to 35.2)0.08
 Steroids2 (5.1)2 (2.6)4 (3.5)2.5 (–5.3 to 14.9)0.49
 Thyroid replacement3 (7.7)7 (9.2)10 (8.7)1.5 (–12.8 to 12.2)0.79
  • Data are n (%) unless otherwise indicated.