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Table 1 Association between number of ultrasound scans and socio-demographic and clinical variables (n/%)

From: Utilization of antenatal ultrasound scan and implications for caesarean section: a cross-sectional study in rural Eastern China

Variables Number of ultrasound scans Pvalue
  No scans 1-2 ≥ 3  
Maternal age (years)     < 0.001
≤ 23 years 36/22.2 53/32.7 73/45.1  
24-31 years 249/23.2 512/47.6 314/29.2  
≥ 32 years 313/28.7 544/50.0 232/21.3  
Maternal education level (years)     < 0.001
≤ 5 education years 95/58.6 58/35.8 9/5.6  
6-8 education years 451/42.0 512/47.6 112/10.4  
≥ 9 education years 317/29.1 573/52.6 199/18.3  
Husband education level (years)     < 0.001
≤ 5 education years 49/30.2 93/57.4 20/12.3  
6-8 education years 233/21.7 675/62.8 167/15.5  
≥ 9 education years 191/17.5 655/60.1 243/22.3  
Family annual income (yuan)     < 0.001
≤ 3000 yuan 117/72.2 34/21.0 11/6.8  
3001-7499 yuan 614/57.1 294/27.3 167/15.5  
≥ 7500 yuan 556/51.1 359/33.0 174/16.0  
Antenatal care (n/%) *     < 0.001
Yes 17/2.0 294/35.4 519/62.5  
No 145/9.7 781/52.2 570/38.1  
Adverse outcomes in previous pregnancy (n/%)     0.001
Yes 11/6.7 54/33.1 98/60.1  
No 151/7.0 1021/47.2 991/45.8  
Pregnancy complication (n/%)     < 0.001
Yes 15/2.9 208/40.8 287/56.3  
No 147/8.1 867/47.7 802/44.2  
Primiparity (n/%)     < 0.001
Yes 74/4.7 681/42.9 834/52.5  
No 88/11.9 394/53.5 255/34.6  
Preterm delivery (n/%)     0.710
Yes 11/7.9 68/48.6 61/43.6  
No 151/6.9 1007/46.1 1028/47.0  
Large for date infant (n/%)     < 0.001
Yes 31/14.0 93/41.9 98/44.1  
No 131/6.2 982/46.7 991/47.1  
Caesarean section (n/%)     < 0.001
Yes 56/4.4 509/39.9 710/55.7  
No 106/10.1 566/53.9 379/36.1  
  1. * Antenatal care refers to antenatal check-up during the 1st trimester of pregnancy plus 4 times during 2nd and 3 rd trimesters, ie, at least 5 antenatal visits during pregnancy