Table 1.
Demographic characteristics of the nine eMERGE populations under study between January 1, 2001 to December 31, 2007
| GHC-CAT | MAR-CAT | MAY-CON | MAY-PAD | NU-CON | NU-T2D | VU-CON | VU-QRS | VU-T2D | |
|---|---|---|---|---|---|---|---|---|---|
| N | 2217 | 2614 | 1181 | 972 | 850 | 672 | 2236 | 1055 | 5273 |
| Ethnicity | |||||||||
| African American | 0.04 | 0 | 0 | 0 | 0.08 | 0.23 | 0.09 | 0.13 | 0.18 |
| Asian | 0.03 | 0 | 0 | 0 | 0 | 0 | 0.01 | 0.01 | 0.01 |
| Other* | 0.01 | 0 | 0 | 0 | 0.07 | 0.13 | 0.02 | 0.01 | 0.02 |
| Unknown† | 0.02 | 0 | 0.03 | 0.02 | 0 | 0 | 0.12 | 0.01 | 0.02 |
| White | 0.90 | 0.99 | 0.96 | 0.98 | 0.85 | 0.64 | 0.76 | 0.84 | 0.77 |
| Female | 0.62 | 0.58 | 0.43 | 0.36 | 0.65 | 0.52 | 0.64 | 0.7 | 0.53 |
| Born before 1928 | 0.76 | 0.38 | 0.04 | 0.22 | 0.01 | 0.04 | 0.05 | 0.03 | 0.08 |
| Age if born in or after 1928 | 70 (65, 73) | 65 (53, 72) | 60 (52, 69) | 64 (50, 72) | 41 (27, 59) | 55 (40, 68) | 46 (25, 64) | 48 (28, 64) | 53 (33, 68) |
| Years of observation | 6.7 (4.6, 6.9) | 6.7 (5.8, 6.9) | 6.3 (4.5, 6.9) | 6.3 (4, 6.9) | 5.6 (3.6, 6.8) | 6.3 (3.8, 6.9) | 5.5 (3.4, 6.7) | 6 (3.7, 6.8) | 6.3 (3.8, 6.9) |
| Unique visit days | 97 (45, 198) | 101 (44, 198) | 44 (13, 152) | 44 (14, 143) | 76 (25, 186) | 86 (32, 219) | 95 (32, 226) | 113 (35, 238) | 124 (43, 244) |
| Total ICD9s | 221 (93, 483) | 215 (90, 452) | 159 (50, 496) | 160 (51, 503) | 196 (47, 579) | 243 (62, 640) | 193 (57, 520) | 221 (67, 574) | 249 (84, 604) |
| Unique ICD-9s | 62 (37, 116) | 62 (34, 114) | 46 (21, 99) | 48 (21, 117) | 45 (15, 101) | 52 (16, 101) | 53 (19, 109) | 60 (22, 118) | 63 (26, 117) |
| Unique categories | 36 (19, 63) | 34 (18, 57) | 21 (10, 38) | 27 (11, 51) | 11 (5, 25) | 26 (10, 52) | 7 (2, 16) | 15 (5, 34) | 21 (8, 47) |
| Unique sections | 23 (13, 35) | 20 (11, 31) | 15 (8, 23) | 17 (8, 29) | 9 (4, 17) | 18 (7, 30) | 6 (2, 12) | 11 (4, 22) | 15 (6, 28) |
| Unique chapters | 11 (7, 13) | 10 (7, 13) | 9 (6, 11) | 9 (5, 12) | 6 (3, 10) | 9 (5, 12) | 4 (2, 8) | 7 (3, 11) | 8 (4, 12) |
*
“Other” ethnicities include Hispanics, Pacific Islander, American Indians, and individuals reporting multiple ethnicities.
†
“Unknown” ethnicity indicates that no value for this field was recorded in the EMR.
Categorical variables are summarized with proportions and continuous variables are summarized with, 50th (10th, 90th) percentiles.