Table 1 Characteristics of the study population in the groups with and without asthma
From: Association of endometriosis with asthma: a study of the NHANES database in 1999–2006
Variables | Total (n = 5556) | Asthma | P | |
|---|---|---|---|---|
Yes (n = 782) | No (n = 4774) | |||
Age, years, Mean (S.E) | 37.19 (0.18) | 36.94 (0.40) | 37.24 (0.19) | 0.489 |
Age, years, n (%)1 | 0.188 | |||
< 30 | 1,869 (26.89) | 295 (29.50) | 1,574 (26.42) | |
30–39 | 1,560 (28.78) | 193 (25.32) | 1,367 (29.41) | |
40–49 | 1,463 (30.53) | 202 (32.14) | 1,261 (30.23) | |
≥ 50 | 664 (13.80) | 92 (13.03) | 572 (13.94) | |
Race, n (%)1 | 0.002 | |||
Mexican American | 1,314 (7.91) | 90 (3.63) | 1,224 (8.69) | |
Non-Hispanic Black | 271 (5.87) | 46 (6.16) | 225 (5.82) | |
Non-Hispanic White | 2,567 (68.44) | 428 (72.76) | 2,139 (67.66) | |
Other Hispanic | 1,151 (12.28) | 184 (12.57) | 967 (12.23) | |
Other races | 253 (5.50) | 34 (4.89) | 219 (5.61) | |
Education level, n (%)1 | 0.074 | |||
<12th grade | 2,966 (60.97) | 469 (65.05) | 2,497 (60.23) | |
High school grade/GED or equivalent | 1,244 (23.47) | 146 (20.05) | 1,098 (24.09) | |
College graduate or above | 1,346 (15.56) | 167 (14.90) | 1,179 (15.68) | |
Marital status, n (%)1 | 0.053 | |||
Married | 1,633 (27.72) | 269 (31.09) | 1,364 (27.11) | |
Widowed | 84 (1.40) | 11 (1.18) | 73 (1.44) | |
Divorced/separated | 3,080 (56.66) | 371 (51.19) | 2,709 (57.66) | |
Never married | 759 (14.22) | 131 (16.54) | 628 (13.80) | |
PIR, Mean (S.E) | 2.95 (0.04) | 2.79 (0.09) | 2.98 (0.04) | 0.022 |
Height, cm, Mean (S.E) | 163.15 (0.12) | 163.33 (0.25) | 163.11 (0.14) | 0.441 |
Weight, kg, Mean (S.E) | 75.10 (0.47) | 78.97 (0.98) | 74.40 (0.45) | < 0.001 |
BMI, kg/m2, Mean (S.E) | 28.19 (0.17) | 29.54 (0.35) | 27.95 (0.16) | < 0.001 |
BMI, kg/m2, n (%)1 | 0.002 | |||
< 18.5 | 129 (3.04) | 19 (3.25) | 110 (3.00) | |
18.5–24.9 | 1,795 (37.68) | 219 (32.92) | 1,576 (38.54) | |
25-29.9 | 1,580 (25.84) | 192 (22.17) | 1,388 (26.51) | |
≥30 | 2,052 (33.45) | 352 (41.66) | 1,700 (31.95) | |
Waist circumference, Mean (S.E) | 92.30 (0.40) | 95.37 (0.84) | 91.74 (0.38) | < 0.001 |
Cigarettes Smoking, n (%)1 | 0.001 | |||
Yes | 2,110 (42.74) | 356 (49.57) | 1,754 (41.50) | |
No | 3,446 (57.26) | 426 (50.43) | 3,020 (58.50) | |
Sexual intercourse, n (%)1 | 0.282 | |||
Yes | 5,290 (95.77) | 754 (96.55) | 4,536 (95.63) | |
No | 266 (4.23) | 28 (3.45) | 238 (4.37) | |
Estrogen and progesterone hormones use, n (%)1 | 0.011 | |||
Yes | 672 (15.44) | 126 (19.64) | 546 (14.68) | |
No | 4,884 (84.56) | 656 (80.36) | 4,228 (85.32) | |
Uterine fibroids, n (%)1 | 0.010 | |||
Yes | 699 (13.70) | 124 (17.46) | 575 (13.02) | |
No | 4,857 (86.30) | 658 (82.54) | 4,199 (86.98) | |
Pregnancy history, n (%)1 | 0.601 | |||
Yes | 4,695 (79.57) | 653 (78.74) | 4,042 (79.72) | |
No | 861 (20.43) | 129 (21.26) | 732 (20.28) | |
At least one ovary removed, n (%)1 | 0.012 | |||
Yes | 437 (9.71) | 78 (13.25) | 359 (9.07) | |
No | 5,119 (90.29) | 704 (86.75) | 4,415 (90.93) | |
Birth control pills, n (%)1 | 0.001 | |||
Yes | 4,189 (79.75) | 643 (85.34) | 3,546 (78.74) | |
No | 1,367 (20.25) | 139 (14.66) | 1,228 (21.26) | |
Current pregnant, n (%)1 | 0.523 | |||
Yes | 1,182 (8.34) | 172 (8.93) | 1,010 (8.24) | |
No | 4,374 (91.66) | 610 (91.07) | 3,764 (91.76) | |
Endometriosis, n (%)1 | < 0.001 | |||
Yes | 380 (9.02) | 88 (13.50) | 292 (8.20) | |
No | 5,176 (90.98) | 694 (86.50) | 4,482 (91.80) | |