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Table 2 Demographic information of the study participant (N = 7716)

From: Prediction of low Apgar score at five minutes following labor induction intervention in vaginal deliveries: machine learning approach for imbalanced data at a tertiary hospital in North Tanzania

 Maternal characteristics Low (< 7) Apgar score Normal (≥7) Apgar score χ2 p-value
Parity
 Nulliparous 409 (55.8) 3817 (54.66)  
 Multiparous 324 (44.2) 3166 (45.34) 0.556
Maternal age
  < 25 273 (37.24) 2575 (36.88)  
 25–35 361 (49.25) 3606 (51.64)  
  > 35 99 (13.51) 802 (11.49) 0.214
Gestational age
 Term 463 (63.17) 5683 (81.38)  
 Preterm 209 (28.51) 593 (8.49)  
 Post term 61 (8.32) 707 (10.12) < 0.001
PROM
 No 709 (96.73) 6829 (97.79)  
 Yes 24 (3.27) 154 (2.21) 0.067
Gestational diabetes
 No 730 (99.59) 6974 (99.87)  
 Yes 3 (0.41) 9 (0.13) 0.067
Prenatal visits
  < 3 296 (40.38) 1796 (25.72)  
 3–6 365 (49.80) 3997 (57.24)  
  > 6 72 (9.82) 1190 (17.04) < 0.001
Induction method
 Oxytocin 591 (80.63) 6361 (91.09)  
 Prostaglandins 142 (19.37) 622 (8.91) < 0.001
Referred for delivery
 No 453 (61.80) 5573 (79.81)  
 Yes 280 (38.20) 1410 (20.19) < 0.001
Ever Use of Family planning
 No 344 (46.93) 2896 (41.47)  
 Yes 389 (53.07) 4087 (58.53) 0.004
Smoking during pregnancy
 No 729 (99.45) 6966 (99.76)  
 Yes 4 (0.55) 17 (0.24) 0.135
Alcohol during pregnancy
 No 550 (75.03) 4977 (71.27)  
 Yes 183 (24.97) 2006 (28.73) 0.032
Child sex
 Female 412 (56.21) 3563 (51.02)  
 Male 321 (43.79) 3420 (48.98) 0.008
Body mass index
 Underweight 2 (0.27) 27 (0.39)  
 Normal 109 (14.87) 1262 (18.07)  
 Overweight 455 (62.07) 4133 (59.19)  
 Obese 167 (22.78) 1561 (22.35) 0.169
Epilepsy
 No 732 (99.86) 6961 (99.68)  
 Yes 1 (0.14) 22 (0.32) 0.399
Preeclampsia
 No 717 (97.82) 6873 (98.42)  
 Yes 16 (2.18) 110 (1.58) 0.217