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. 2012 Sep 17;7(9):e43906. doi: 10.1371/journal.pone.0043906

Table 2. Results of multinomial logistic regression models for estimated of factors associated with elective and non-programmed Caesarean Section in a representative sample of Italian mothers (N = 2 469).

Elective Cesarean Section Non-programmed Cesarean Section
(406 out of 2474) (472 out of 2474)
OR (95% CI) p OR (95% CI) p
Maternal age (one year increase) 1.10 1.07 1.12 0.00 1.03 1.01 1.06 0.01
Educational level A
- High 1 1
- Low 1.03 0.55 1.92 0.94 0.94 0.53 1.65 0.82
- Medium-low 1.00 0.48 1.68 0.74 0.99 0.56 1.76 0.99
- Medium-high 0.88 0.44 1.74 0.71 0.74 0.39 1.39 0.35
Family social class
- Upper 1 1
- Middle – upper 0.87 0.56 1.37 0.56 0.89 0.59 1.35 0.59
- Middle – lower 0.82 0.60 1.14 0.25 0.88 0.58 1.32 0.54
- Lower 0.67 0.45 0.98 0.04 0.72 0.51 1.02 0.07
Area of residence
- Northern-west 1 1
- Northern-east 0.92 0.61 1.39 0.68 1.00 0.71 1.39 0.99
- Central 0.94 0.62 1.43 0.77 1.07 0.76 1.51 0.72
- Southern 2.78 1.94 4.00 0.00 1.56 1.12 2.17 0.01
- Island 1.64 1.03 2.62 0.04 1.28 0.84 1.95 0.25
Professional who attended the pregnancy
- Public Obstetrician 1 1
- Private Obstetrician 1.28 0.89 1.83 0.18 1.20 0.88 1.64 0.24
Place of delivery (private Vs. public hospital) 2.05 1.07 3.93 0.03 0.66 0.26 1.65 0.38
Antenatal diagnostic
- Not done 1 1
- In a Public facility 0.86 0.58 1.27 0.46 1.21 0.83 1.76 0.33
- In a Private facility 1.17 0.76 1.80 0.48 1.27 0.84 1.93 0.26
Antenatal class attendance 0.64 0.54 0.76 0.00 0.86 0.76 0.99 0.03
Health-related problems during pregnancy
- Diabetes 0.88 0.40 1.96 0.76 0.66 0.31 1.42 0.29
- Hypertension 2.23 1.25 3.98 0.01 1.90 1.17 3.01 0.01
- Pre-term delivery risk 1.16 0.76 1.77 0.50 1.11 0.76 1.62 0.57
- Pre-term abortion risk 1.26 0.85 1.88 0.25 1.01 0.71 1.43 0.95
Hospitalisation during pregnancy 0.93 0.69 1.25 0.63 1.48 1.15 1.90 0.02
Birthweight B
≥2,500 grams 1 1
<2500 grams 1.29 0.77 2.18 0.33 2.08 1.33 3.26 0.00
Pre-term birth 2.69 1.75 4.13 0.00 1.67 1.01 2.54 0.02

OR = Odds Ratio; CI = Confidence Interval.

A

Educational level was categorized as follows: Low (ISCED = 0. 1). Medium-low (ISCED = 2). Medium-upper (ISCED = 3. 4). Upper (ISCED = 5. 6);

B

Children weighting less than 2 500 grams were classified as low birthweight.