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Table 1 Characteristic of cases with unintentional injury and their controls, children 6 to 14 years old, Hei Longjiang, China, 2017–2018

From: Cumulative effect of risk and protective factors on unintentional injury for Chinese rural children: a nested case-control study

Characteristics

Case group (n = 424)

Control group (n = 1272)

Statistics

Age (year) M (SD)

10.93 (1.76)

11.07 (2.02)

t = 1.353

Gender (%)

  

χ2 = 2.216

 Boy

213 (50.2%)

586 (46.1%)

 

 Girl

211 (49.8%)

686 (53.9%)

 

Left behind children (%)

220 (51.9%)

453 (35.6%)

χ2 = 35.185**

Primary caregiver (%)

  

F = 35.255**

 Mother

157 (37.0%)

908 (71.4%)

 

 Father

21 (5.0%)

115 (9.0%)

 

 Grandparents

235 (55.4%)

235 (18.5%)

 

 Baby sister or others

11 (2.6%)

14 (1.1%)

 

Primary caregiver’s education

  

F = 6.008*

 Illiteracy

27 (6.4%)

39 (3.1%)

 

 Elementary school

100 (23.6%)

278 (21.9%)

 

 Junior high school

233 (54.9%)

754 (59.3%)

 

 Senior high school

57 (13.4%)

152 (11.9%)

 

 Above college

7 (1.7%)

49 (3.9%)

 

Health of primary caregiver

8.68 (2.47)

9.14 (3.99)

t = 2.232*

Mother’s age

36.56 (6.00)

37.51 (6.00)

t = 2.977*

Mother’s education

  

F = 0.050

 Illiteracy

21 (5.0%)

56 (4.4%)

 

 Elementary school

81 (19.1%)

291 (22.9%)

 

 Junior high school

255 (60.1%)

711 (55.9%)

 

 Senior high school

53 (12.5%)

164 (12.9%)

 

 Above college

14 (3.3%)

50 (3.9%)

 

Father’s age

38.19 (6.07)

39.18 (5.60)

t = 2.944*

Father’s education

  

F = 110.423**

 Illiteracy

5 (1.2%)

3 (0.2%)

 

 Elementary school

87 (20.5%)

30 (2.3%)

 

 Junior high school

275 (64.9%)

953 (74.9%)

 

 Senior high school

46 (10.8%)

220 (17.3%)

 

 Above college

11 (2.6%)

66 (5.2%)

 

Household income (per person per month in yuan)

  

F = 7.892**

  < 1000 RMB

50 (11.8%)

83 (6.5%)

 

 1000–3000 RMB

241 (56.8%)

442 (34.7%)

 

 3001–5000 RMB

97 (22.9%)

569 (44.7%)

 

  > 5000 RMB

33 (7.8%)

178 (14.0%)

 
  1. *p < 0.05 ** p < 0.001