Table 2.
Selected Characteristics of Study Population by Prepregnancy Asthma Status
| All | Prepregnancy Asthma Severity* |
|||
|---|---|---|---|---|
| Intermittent (n=368) | Mild Persistent (n=129) | Moderate/Severe (n=144) | ||
| Race | ||||
| White | 407 (63.5) | 217 (59.0) | 86 (66.7) | 104 (72.2) |
| Black | 66 (10.3) | 37 (10.1) | 17 (13.2) | 12 (8.3) |
| Hispanic | 147 (22.9) | 99 (26.9) | 25 (19.4) | 23 (16.0) |
| Age (y) | ||||
| Younger than 20 | 99 (15.4) | 70 (19.0) | 18 (14.0) | 11 (7.6) |
| 20–34 | 457 (71.3) | 255 (69.3) | 91 (70.5) | 111 (77.1) |
| 35 or older | 85 (13.3) | 43 (11.7) | 20 (15.5) | 22 (15.3) |
| Atopy | ||||
| No | 158 (24.6) | 115 (31.3) | 24 (18.6) | 19 (13.2) |
| Yes | 483 (75.4) | 253 (68.8) | 105 (81.4) | 125 (86.8) |
| Prepregnancy BMI (kg/m2) | ||||
| Less than 26 | 383 (59.8) | 235 (63.9) | 65 (50.4) | 83 (57.6) |
| 26 or higher | 255 (39.8) | 132 (35.9) | 62 (48.1) | 61 (42.4) |
| Parity | ||||
| 0 | 300 (46.8) | 172 (46.7) | 61 (47.3) | 67 (46.5) |
| 1 or more | 341 (53.2) | 196 (53.3) | 68 (52.7) | 77 (53.5) |
| Fetal sex | ||||
| Male | 330 (51.5) | 191 (51.9) | 60 (46.5) | 79 (54.9) |
| Female | 308 (48.0) | 176 (47.8) | 68 (52.7) | 64 (44.4) |
| Smoking history | ||||
| Nonsmoker | 509 (79.4) | 301 (81.8) | 95 (73.6) | 113 (78.5) |
| 1st trimester only | 75 (11.7) | 37 (10.1) | 18 (14.0) | 20 (13.9) |
| 1st and 3rd trimesters | 57 (8.9) | 30 (8.2) | 16 (12.4) | 11 (7.6) |
| No. of months of asthma symptoms (during pregnancy) | ||||
| None | 50 (7.8) | 43 (11.7) | 6 (4.7) | 1 (0.7) |
| 1–3 | 146 (22.8) | 107 (29.1) | 24 (18.6) | 15 (10.4) |
| 4–6 | 201 (31.4) | 134 (36.4) | 42 (32.6) | 25 (17.4) |
| 7 or more | 244 (38.1) | 84 (22.8) | 57 (44.2) | 103 (71.5) |
| No. months of controller medication use (during pregnancy) | ||||
| None | 207 (32.3) | 172 (46.7) | 25 (19.4) | 10 (6.9) |
| 1–3 | 144 (22.5) | 99 (26.9) | 23 (17.8) | 22 (15.3) |
| 4–6 | 97 (15.1) | 55 (14.9) | 26 (20.2) | 16 (11.1) |
| 7 or more | 193 (30.1) | 42 (11.4) | 55 (42.6) | 96 (66.7) |
| No. of emergency department visits during pregnancy | ||||
| None | 542 (84.6) | 325 (88.3) | 110 (85.3) | 107 (74.3) |
| One | 58 (9.0) | 26 (7.1) | 12 (9.3) | 20 (13.9) |
| Two or more | 41 (6.4) | 17 (4.6) | 7 (5.4) | 17 (11.8) |
| No. of hospital visits during pregnancy | ||||
| None | 627 (97.8) | 365 (99.2) | 126 (97.7) | 136 (94.4) |
| One or more | 14 (2.2) | 3 (0.8) | 3 (2.3) | 8 (5.6) |
BMI, body mass index.
Data are n (%). N values might not sum to total because of missing data.
*
Prepregnancy asthma severity measured by maximum Adapted Global Initiative for Asthma score in the year before pregnancy.