Table 1 Number of deliveries and CDs broken down by sociodemographic, clinical and organizational variables in the study population
From: Determinants of cesarean delivery: a classification tree analysis
Number of deliveries | Number of CDs | Percentage of CDs | |
|---|---|---|---|
Entire populations | 213,539 | 64,622 | 30.3 |
Age | |||
<18 | 707 | 113 | 16.0 |
18–24 | 23,677 | 4,827 | 20.4 |
25–29 | 48,436 | 12,402 | 25.6 |
30–34 | 76,593 | 22,921 | 29.9 |
35–39 | 52,265 | 19,012 | 36.4 |
>39 | 11,861 | 5,347 | 45.1 |
Citizenship | |||
Italian | 159,979 | 50,334 | 31.5 |
High-income country | 1,997 | 547 | 27.4 |
Low-income country | 51,563 | 13,741 | 26.7 |
Marital status | |||
Single | 52,995 | 15,989 | 30.2 |
Married | 144,153 | 43,578 | 30.2 |
Divorced/separated | 5,133 | 1,904 | 37.1 |
Widow | 346 | 141 | 40.8 |
Not declared | 10,912 | 3,010 | 27.6 |
Maternal education | |||
Primary | 9,749 | 2,749 | 28.2 |
Secondary | 58,661 | 18,106 | 30.9 |
High-school | 96,551 | 29,118 | 30.2 |
University | 48,578 | 14,604 | 30.1 |
Paternal education | |||
Primary | 6,507 | 1,898 | 29.2 |
Secondary | 68,922 | 20,726 | 30.1 |
High-school | 81,059 | 24,468 | 30.2 |
University | 33,837 | 10,285 | 30.4 |
Unknown | 23,214 | 7,245 | 31.2 |
Comorbidities | |||
Thyroid diseases | 342 | 143 | 41.8 |
Substance abuse | 51 | 26 | 51.0 |
Hypertension | 4,198 | 2,204 | 52.5 |
Diabetes | 3,105 | 1,635 | 52.7 |
Other severe diseases | 1,196 | 751 | 62.8 |
Lung diseases | 190 | 145 | 76.3 |
HIV | 182 | 175 | 96.2 |
Genital herpes | 17 | 17 | 100.0 |
Obstetrical conditions | |||
Premature rupture of membranes | 28,971 | 5,690 | 19.6 |
Rh-isoimmunization | 1,871 | 496 | 26.5 |
Oligohydramnios | 7,550 | 2,560 | 33.9 |
Previous still birth/abortion | 36,673 | 12,665 | 34.5 |
Fetal anomalies | 2,309 | 1,076 | 46.6 |
Dystocia | 7,054 | 3,583 | 50.8 |
Intrauterine growth retardation | 6,602 | 3,695 | 56.0 |
Polyhydramnios | 491 | 315 | 64.2 |
Infections of the amniotic cavity | 176 | 120 | 68.2 |
Eclampsia/pre-eclampsia | 3,175 | 2,319 | 73.0 |
Fetopelvic disproportion | 2,514 | 1,843 | 73.3 |
Abortion threads/assisted fecundation/supervision of high risk pregnancy | 668 | 459 | 68.7 |
Multiple pregnancy | 3,222 | 2,826 | 87.7 |
Fetal distress | 5,721 | 5,086 | 88.9 |
Mal-position/Mal-presentation of fetus | 12,965 | 11,870 | 91.6 |
Repeat CD | 23,696 | 22,059 | 93.1 |
Abruptio placentae/placenta previa/ante-partum hemorrhage | 2,675 | 2,546 | 95.2 |
Cord prolapse | 138 | 135 | 97.8 |
Pregnancy length | |||
At term | 193,893 | 54,205 | 28.0 |
Pre-term | 15,664 | 9,430 | 60.2 |
Post-term | 3,733 | 910 | 24.4 |
Unknown | 249 | 77 | 30.9 |
Infant birth weight (g) | |||
≤1500 | 10,633 | 6,534 | 61.5 |
1501–2499 | 1,783 | 1,506 | 84.5 |
2500–3999 | 185,432 | 52,306 | 28.2 |
≥4000 | 15,471 | 4,178 | 27.0 |
Unknown | 220 | 98 | 44.5 |
Multiparity | |||
Nulliparous | 117,095 | 35,700 | 30.5 |
Multiparous | 96,444 | 28,922 | 30.0 |
Type of hospital | |||
Teaching | 58,600 | 19,868 | 33.9 |
Non teaching | 154,939 | 44,754 | 28.9 |
Activity volume (mean number of annual deliveries) | |||
100–500 | 7,286 | 2,674 | 36.7 |
501–799 | 21,872 | 6,228 | 28.5 |
800–999 | 19,439 | 5,070 | 26.1 |
1000–2499 | 96,340 | 29,255 | 30.4 |
≥2500 | 68,602 | 21,395 | 31.2 |
Day of delivery | |||
Working days | 158,265 | 53,282 | 33.7 |
Non-working days | 55,274 | 11,340 | 20.5 |
Time of delivery | |||
Daytime (7:01 a.m. – 6:59 p.m.) | 142,929 | 51,333 | 35.9 |
Nighttime (7:00 p.m. – 7:00 a.m.) | 70,610 | 13,289 | 18.8 |