Table 1

Demographic characteristics (%)

Demographics (cohort with exposure data) n (%)Total N=1605 (%)NCases (n)
Gender1605109
 Male888 (55)51
 Female717 (45)58
Age (years)1605109
 <30324 (20)19
 ≥30 and <40424 (26)23
 ≥40 and <50531 (33)40
 ≥50326 (20)27
Ethnicity1581106
 Caucasian881 (55)69
 Hispanic415 (26)12
 African-American118 (7)11
 Asian124 (8)9
 Other43 (3)5
Education1596108
 Some high school or less390 (24)18
 High school graduate or above1206 (76)90
Handedness1605109
 Left handed126 (8)12
 Right handed1479 (92)97
Body mass index1599109
 Body mass index (<25)542 (34)23
 Body mass index (≥25 and <30: overweight)556 (35)30
 Body mass index (≥30: obese)501 (31)56
General health127994
 Very good or excellent501 (39)29
 Good584 (46)49
 Fair or poor194 (15)16
Medical condition1605109
 No medical condition1438 (90)93
 Current medical condition167 (10)16
  Diabetes61 (4)5
  Rheumatoid arthritis23 (1)0
  Thyroid disease (hyper/hypo)78 (5)11
  Pregnancy12 (1)0
Smoking status1598107
 Never smoked927 (58)58
 Currently smokes415 (26)31
 Previously smoked256 (16)18