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Table 4 Relationship between total scores and birth weight, birth history, and maternal smoking status during pregnancy

From: A low-birth-weight risk assessment scale: development and validation through a questionnaire-based survey

Items Group   t F p Tukey–Kramer HSD test (p value)
Birth weight (g) < 2500 ≥2500 g       
 Mean 65.9 68.7    −3.153   0.002  
 (SD) (8.8) (8.0)     
n 86 802       
Birth history Primipara Multipara       
 Mean 69.7 67.7    3.534   p < 0.0001  
 (SD) (8.6) (7.7)     
n 334 554       
Maternal smoking status No history of smoking Stopped smoking before this pregnancy Permanently stopped smoking during this pregnancy Temporarily stopped smoking during this pregnancy Continued smoking throughout this pregnancy     No history of smoking > Continued smoking throughout this pregnancy (p < 0.0001)
Stopped smoking before this pregnancy > Continued smoking throughout this pregnancy
(p < 0.0001)
Permanently stopped smoking during this pregnancy > Continued smoking throughout this pregnancy (p < 0.0001)
 Mean 68.9 69.6 69.2 65.8 59.8   7.894 p < 0.0001
 (SD) (7.7) (8.4) (7.8) (6.9) (8.5)  
n 579 130 53 17 21    
  1. t test, one-way analysis of variance; p < 0.05. HSD honestly significant difference, SD standard deviation