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Table 1 Characteristics of the studied participants of two groups at baseline

From: Four-level evaluation of health promotion intervention for preventing early childhood caries: a randomized controlled trial

Group All participants Intervention (n = 52) Control (n = 52)  
   Mean (SD) Number (%) Mean (SD) Number (%) P value
Women age (year) 31 ± 6.68 32.07 (7.56)   31.69 (6.59)   0.67*
Infant age (month) 18 ± 7.21 19.44 (8.83)   18.51 (8.79)   0.49*
Having had dental visit       0.85**
Yes 29 (27.88)   15 (28.84)   14 (26.92)  
No 75 (72.12)   37 (71.16)   38 (73.08)  
Child sex       0.99**
Male 52 (50)   26 (50) 26 (50)   
Female 52 (50)   26 (50) 26 (50)   
Education       0.74**
≤ High school 10 (9.6)   4(7.7)   6 (11.5)  
> High school 94 (90.4)   48 (93.3)   46 (88.5)  
Husband’s education       0.73**
≤ High school 10 (9.6)   4 (7.7)   6 (11.5)  
> High school 94 (90.4)   48 (93.3)   46 (88.5)  
Income       0.81**
Less than fair 12 (11.53)   5 (9.6)   6 (11.53)  
Fair and better than fair 92 (88.47)   47 (90.4)   46 (88.47)  
  1. *Results obtained from t-test
  2. **Results derived from chi-square
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