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Table 1 Demographic characteristic of pregnant migrant workers and local pregnant women

From: Oral health status and behaviors of pregnant migrant workers in Bangkok, Thailand: a cross-sectional study

  Pregnant migrant workers
n = 208 (%)
Local pregnant women
n = 210 (%)
p value
Age (years) mean ± SD 27.5 ± 4.9 26.2 ± 6.1 0.017*T
BMI (kg/m2) mean ± SD 22.2 ± 2.8 21.7 ± 4.0 0.188 T
Smoking N (%) 0 (0) 2 (1.0)  
Previous preterm birth N (%) 3 (1.4) 5 (2.4) 0.724F
Work status N (%)    
 Housewife 0 (0) 74 (35.4)  
 Company employee 0 (0) 26 (12.4)  
 Government employee 0 (0) 13 (6.2)  
 Private business 0 (0) 13 (6.2)  
 Household assistant 79 (38.0) 0 (0)  
 Shop assistant 48 (23.1) 19 (9.0)  
 Contractor 36 (17.3) 54 (25.7)  
 Construction worker 25 (12.0) 3 (1.4)  
 Factory worker 17 (8.2) 8 (3.8)  
 Others 3 (1.4) 0 (0)  
Monthly household income (Baht)
Median (min–max)
13,750 (5000–27,000) 20,000 (5000–81,600)  < .001*M
Gestational age at participation N (%)     < .001*C
 1st trimester 58 (27.9) 110 (51.6)  
 2nd trimester 67 (32.2) 76 (35.7)  
 3rd trimester 83 (39.9) 27 (12.7)  
  1. C = p value from Chi-Square test, F = p value from Fisher’s exact Test, M = p value from Mann–Whitney U Test and T = p value form Student’s t-test
  2. *Significant at p value < 0.05