Table 1 Baseline characteristics of end-stage renal disease cases and controls in the southern community cohort study
Overall | Whites | Blacks | |||||||
|---|---|---|---|---|---|---|---|---|---|
Cases | Controls | P | Cases | Controls | P | Cases | Controls | P | |
N = 631 | N = 1897 | 66 | 198 | 565 | 1699 | ||||
Age | 53.8 (9.0) | 53.7 (9.0) | 0.75 | 56.6 (7.8) | 56.7 (7.8) | 0.96 | 53.5 (9.1) | 53.3 (9.0) | 0.73 |
Age Categories | 1.00 | 0.77 | 1.0 | ||||||
40–49 | 243 (38.5) | 730 (38.5) | 16 (24.2) | 47 (23.7) | 227 (40.2) | 683 (40.2) | |||
50–59 | 228 (36.1) | 682 (36.0) | 30 (45.5) | 83 (41.9) | 198 (35.0) | 599 (35.3) | |||
60–69 | 124 (19.7) | 375 (19.8) | 19 (28.8) | 60 (30.3) | 105 (18.6) | 315 (18.5) | |||
70–79 | 36 (5.7) | 110 (5.8) | 1 (1.5) | 8 (4.0) | 35 (6.2) | 102 (6.0) | |||
Women | 346 (54.8) | 1039 (54.8) | 0.98 | 40 (60.6) | 120 (60.6) | 1.0 | 306 (54.2) | 919 (54.1) | 0.98 |
BMI at age 21 (Kg/m2) | <0.0001 | <0.0001 | <0.0001 | ||||||
Underweight | 53 (9.0) | 214 (11.8) | 2 (3.1) | 29 (15.0) | 51 (9.7) | 185 (11.4) | |||
Normal | 291 (49.4) | 1101 (60.5) | 28 (43.8) | 117 (60.6) | 263 (50.1) | 984 (60.5) | |||
Overweight | 131 (22.2) | 357 (19.6) | 14 (21.9) | 33 (17.1) | 117 (22.3) | 324 (19.9) | |||
Obese class I | 66 (11.2) | 97 (5.3) | 11 (17.2) | 8 (4.2) | 55 (10.5) | 89 (5.5) | |||
Obese class II | 26 (4.4) | 27 (1.5) | 7 (10.9) | 4 (2.1) | 19 (3.6) | 23 (1.4) | |||
Obese class II | 22 (3.8) | 23 (1.3) | 2 (3.1) | 2 (1.0) | 20 (3.8) | 21 (1.3) | |||
BMI at enrollment (Kg/m2) | 0.02 | 0.14 | 0.03 | ||||||
Underweight | 7 (1.1) | 14 (0.7) | 1 (1.5) | 1 (0.5) | 6 (1.1) | 13 (0.8) | |||
Normal | 141 (22.7) | 382 (20.3) | 11 (16.9) | 47 (24.0) | 130 (23.4) | 335 (19.9) | |||
Overweight | 167 (26.9) | 553 (29.4) | 12 (18.5) | 56 (28.6) | 155 (27.9) | 497 (29.5) | |||
Obese class I | 111 (17.9) | 431 (22.9) | 16 (24.6) | 48 (24.5) | 95 (17.1) | 383 (22.7) | |||
Obese class II | 96 (15.5) | 271 (14.4) | 13 (20.0) | 23 (11.7) | 83 (15.0) | 248 (14.7) | |||
Obese class II | 98 (15.8) | 230 (12.2) | 12 (18.5) | 21 (10.7) | 86 (15.5) | 209 (12.4) | |||
Diabetes | 411 (65.1) | 539 (28.5) | <0.0001 | 46 (69.7) | 43 (21.7) | <0.0001 | 365 (64.6) | 496 (29.2) | <0.0001 |
Hypertension | 541 (85.7) | 1242 (65.5) | <0.0001 | 52 (78.8) | 120 (60.6) | 0.007 | 489 (86.5) | 1122(66.1) | <0.0001 |
High Total Cholesterol | 315 (50.0) | 615 (35.3) | <0.0001 | 43 (66.2) | 97 (49.2) | 0.02 | 272 (48.1) | 568 (33.6) | <0.0001 |
Education | 0.78 | 0.01 | |||||||
< High school | 262 (41.5) | 718 (37.9) | 0.035 | 24 (36.4) | 72 (36.4) | 238 (42.1) | 646 (38.0) | ||
High school/Vocational training/Junior college | 336 (53.3) | 1027 (54.1) | 33 (50.0) | 105 (53.0) | 303 (53.6) | 922 (54.3) | |||
College degree or higher | 33 (5.2) | 152 (8.0) | 9(13.6) | 21 (10.6) | 24 (4.3) | 131 (7.7) | |||
Income | <0.0001 | 0.55 | <0.0001 | ||||||
< $15,000 | 459 (73.7) | 1186 (63.1) | 48 (72.7) | 135 (69.6) | 411 (73.8) | 1051 (62.4) | |||
$15,000–24,999 | 111 (17.8) | 425 (22.6) | 11 (16.7) | 28 (14.4) | 100 (18.0) | 397 (23.6) | |||
≥ $25,0000 | 53 (8.5) | 268 (14.3) | 7 (10.6) | 31 (16.0) | 46 (8.3) | 237 (14.1) | |||
Smoking | 0.24 | 0.80 | 0.14 | ||||||
Never | 218 (34.6) | 724 (38.2) | 21 (31.8) | 55 (27.8) | 197 (34.9) | 669 (39.5) | |||
Former | 160 (25.4) | 445 (23.5) | 19 (28.8) | 63 (31.8) | 141 (25.0) | 382 (22.5) | |||
Current | 253 (40.1) | 724 (38.2) | 26 (39.4) | 80 (40.4) | 227 (40.2) | 644 (38.0) | |||