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Table 3 Behaviors problems by parental migration groups, n (%)

From: Mental health and risk behaviors of children in rural China with different patterns of parental migration: a cross-sectional study

  B-LBC (1) O-LBC (2) N-LBC (3) χ2 PC$
Ever smoking     0.09  
 Yes 130 (18.6) 104 (18.8) 135 (18.2)   
 No 569 (81.4) 448 (81.2) 606 (81.8)   
Smoking at least 1 day during the 30 days before the survey 0.96  
 0 days 108 (87.1) 85 (82.5) 107 (85.6)   
  ≥ 1 days 16 (12.9) 18 (17.5) 18 (14.4)   
Ever drinking     0.77  
 Yes 278 (39.8) 217 (39.3) 278 (37.6)   
 No 421 (60.2) 335 (60.7) 461 (62.4)   
Drinking at least 1 day during the 30 days before the survey 0.27  
 0 days 188 (67.4) 149 (69.3) 190 (69.1)   
  ≥ 1 days 91 (32.6) 66 (30.7) 85 (30.9)   
Having been sick or had uncomfortable reactions after had drunk 9.19* (1, 3)
 0 times 249 (89.2) 200 (92.2) 265 (96.0)   
  ≥ 1 times 30 (10.8) 17 (7.8) 11 (4.0)   
Internet addiction     14.17* (1, 3)
 None (20–40) 251 (47.4) 188 (44.5) 279 (49.4)   
 Low (41–60) 189 (35.7) 175 (41.5) 230 (40.7)   
 Mild (61–80) 79 (14.9) 53 (12.6) 49 (8.7)   
 Severe (81–100) 11 (2.1) 6 (1.4) 7 (1.2)   
  1. B-LBC left-behind children with both parents migrating, O-LBC left-behind children with one parent migrating, N-LBC neither parents had migrated
  2. *p < 0.05
  3. $PC indicate the significance of pairwise comparisons in the post hoc analysis