Table 2.
Maternal characteristics and perinatal outcomes of false positive versus true positive severe maternal morbidity casesa
| False positive (n = 109) | True positive (n = 56) | |
|---|---|---|
| Maternal age (y), mean (SD) | 31 (6.2) | 31 (6.2) |
| Maternal age >35 (y) | 33 (30) | 14(25) |
| Maternal race/ethnicity | ||
| Non-Hispanic white | 83 (76) | 43 (77) |
| Non-Hispanic black | 22 (20) | 10 (18) |
| Hispanic | 1 (1.0) | 1 (1.8) |
| Other | 3 (3.0) | 2 (3.2) |
| Insurance | ||
| Private | 63 (58) | 25 (45) |
| Medicaid | 46 (42) | 30 (54) |
| Other | 0(0) | 1 (1.0) |
| Parity | ||
| Nulliparous | 72 (66) | 25 (45) |
| Multiparous | 37 (34) | 31 (55) |
| Assisted reproductive technology | ||
| None | 68 (62) | 37 (66) |
| In vitro fertilization | 28 (26) | 14(25) |
| Other | 13 (12) | 5 (9.0) |
| Chorlonlclty | ||
| Dichorionic | 88 (81) | 47 (84) |
| Monochorionic | 21 (19) | 9(16) |
| Prepregnancy hypertension | 8 (7) | 6(11) |
| Prepregnancy diabetes | 5 (4.6) | 2 (3.6) |
| Preterm birth <32 wk | 29 (27) | 10 (18) |
| Preeclampsia | 36 (33) | 25 (45) |
| Birthweight Twin A (g), mean (SD) | 2,127 (846) | 2,209 (641) |
| Birthweight Twin B (g), mean (SD) | 2,121 (821) | 2,217 (668) |
Abbreviation: SD, standard deviation.
a
True cases of severe maternal morbidity were those that met criteria from the ACOG and SMFM guidelines.