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Table 1 Distribution of selected characteristics of the participant children and their mothers

From: Health related quality of life of preterm born children at three years in a sub urban district in Sri Lanka: a retrospective cohort study

Variable Preterm children Term children Level of significance
No % No %
Birth weight of the childa      χ2 = 454.7
df = 1
p < 0.001
 Very low birth weight (< 1499 g) 37 9.8 0 0.0
 Low birth weight (1500 - 2499 g) 267 70.4 14 3.7
 Normal weight (>  2500 g) 75 19.8 364 96.3
Occurrence of acute complications at birtha      χ2 = 47.34
df = 1
p < 0.001
 Yes 143 37.7 59 15.6
 No 236 62.3 319 84.4  
Mode of deliverya      χ2 = 20.40, df = 1, p = 0.001
 Normal vaginal delivery 216 56.9 271 71.2
 Instrumental delivery 07 1.8 10 2.6
 Lower Segment Cesarean Section 156 41.2 96 25.3
Admission for special care at birtha      χ2 = 87.03
df = 1
p < 0.001
 Yes 118 31.1 19 5.0
 No 261 68.9 359 95.0
Reported prolonged illness during last 3 years      χ2 = 1.309
df = 1
p = 0.253
 Yes 104 27.4 90 23.8
 No 275 72.6 288 76.2
Development status of the childrena      χ2 = 19.33, df = 1, p = 0.001
 Development “on schedule” 218 57.5 275 72.8
 Development “not on schedule” 161 42.5 103 27.2
Maternal highest education
 Less than Grade 9 25 6.6 30 7.9  
 Up to O/L 77 20.3 94 24.9 Not calculated
 Passed O/L examination 140 36.9 132 34.9  
 Up to A/L 34 9.0 28 7.4  
 Passed A/L examination 88 23.2 83 22.0  
 Tertiary education 15 4.0 11 2.9  
Mother’s occupational statusa      χ2 = 11.32
df = 1
p < 0.001
 Employed mother 68 17.9 36 9.5
 Non employed mother 311 82.1 342 90.5
Total 379 100.0 378 100.0  
  1. aDifference in the characteristic between term and preterm groups was statistically significant (p < 0.05)