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. 2013 Feb 11;2(1):46. doi: 10.1186/2193-1801-2-46

Table 1.

Demographic and clinical characteristics of cases/controls

Cases (n = 830) Controls (n = 907) P
Age* 43 (39–47) 41 (36–44) <0.001
Female 354 (43%) 407 (45%) 0.421
Black 353 (43%) 354 (39%) 0.207
HTN 371 (45%) 181 (20%) <0.001
MI 62 (7.5%) 14 (1.5%) <0.001
DM 147 (18%) 55 (6%) <0.001
Smoking 348 (42%) 257 (28%) <0.001
OC 57 (16%) 34 (8%) <0.001
Migraine
 MWA 226 (27%) 193 (21%) 0.005
 MWoA 56 (7%) 73 (8%) 0.346

HTN, Hypertension MI, Myocardial Infarction DM, Diabetes Mellitus Type II OC, Oral Contraceptive use. * Age is expressed as median (25th-75th percentile).