| Most Common Principal Diagnoses | 13-17 Years | 18-24 Years | 25-34 Years | 35-44 Years |
|---|---|---|---|---|
| Percent of Hospital Stays for Pregnant Females | ||||
| Early or threatened labor | 23.6 | 21.9 | 18.5 | 12.7 |
| Urinary tract infection complicating pregnancy | 13.8 | 9.5 | 4.3 | 2.0 |
| Spontaneous abortion | 5.2 | 4.1 | 4.1 | 5.9 |
| Hypertension complicating pregnancy, childbirth, and the puerperium | 4.2 | 4.5 | 5.5 | 6.8 |
| Severe vomiting (hyperemesis) with metabolic disturbance | 3.2 | 4.1 | 3.4 | |
| Missed abortion | 2.7 | 2.4 | 3.2 | 4.6 |
| Ectopic pregnancy | 2.3 | 3.7 | 7.1 | 9.2 |
| Hemorrhage during pregnancy, abruptio placenta, placenta previa | 2.2 | 2.9 | 4.0 | 5.2 |
| Induced abortion | 2.1 | 2.2 | ||
| Excess amniotic fluid and other problems of amniotic cavity | 2.1 | |||
| Diabetes or abnormal glucose tolerance complicating pregnancy and childbirth | 2.2 | 3.4 | 4.5 | |
| Mild vomiting | 2.8 | 2.5 | ||
| Incompetence of cervix | 2.0 | |||