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Table 1 Frequency characteristics of suicidality in College Students (%)

From: Interaction between physical activity and problematic mobile phone use on suicidality in Chinese college students

Variable

N = 4624

Suicide attempt

χ2 value

Suicidal ideation

χ2 value

Yes(n = 164) No (n = 4460)

Yes(n = 331 )No (n = 4293)

Gender

   

1.64

  

0.25

 Male

2058(44.5)

81(3.9)

1977(96.1)

 

143 (6.9)

1915 (93.1)

 

 Female

2566 (55.5)

83 (3.2)

2483 (96.8)

 

188 (7.3)

2378 (92.7)

 

Grade

   

3.60

  

8.20*

 Freshman

1617 (35.0)

48 (3.0)

1569 (97.0)

 

91 (5.6)

1526 (94.4)

 

 Sophomore

1619 (35.0)

57 (3.5)

1562 (96.5)

 

128 (7.9)

1491 (92.1)

 

 Junior student

1388 (30.0)

59 (4.3)

1329 (95.7)

 

112 (8.1)

1276 (91.9)

 

Registered residence

   

1.84

  

2.41

 Rural

2411 (52.1)

77 (3.2)

2334 (96.8)

 

159 (6.6)

2252 (93.4)

 

 Urban

2213 (47.9)

87 (3.9)

2126 (96.1)

 

172 (7.8)

2041 (92.2)

 

Only child

   

8.41*

  

17.38**

 Yes

1441 (31.2)

68 (4.7)

1373 (95.3)

 

137 (9.5)

1304 (90.5)

 

 No

3183 (68.8)

96 (3.0)

3087 (97.0)

 

194 (6.1)

2989 (93.9)

 

Paternal education

   

1.98

  

0.05

  < 12 years

2975 (64.3)

114 (3.8)

2861 (96.2)

 

211 (7.1)

2764 (92.9)

 

  ≥ 12 years

1649 (35.7)

50 (3.0)

1599 (97.0)

 

120 (7.3)

1529 (92.7)

 

Maternal education

   

0.31

  

2.23

  < 12 years

3469 (75.0)

120 (3.5)

3349 (96.5)

 

237 (6.8)

3232 (93.2)

 

  ≥ 12 years

1155 (25.0)

44 (3.8)

1111 (96.2)

 

94 (8.1)

1061 (91.9)

 

Self-reported family economy

   

11.55*

  

34.35**

 Bad

1434 (31.0)

70 (4.9)

1364 (95.1)

 

139 (9.7)

1295 (90.3)

 

 General

2903 (62.8)

83 (2.9)

2820 (97.1)

 

159 (5.5)

2744 (94.5)

 

 Good

287 (6.2)

11 (3.8)

276 (96.2)

 

33 (11.5)

254 (88.5)

 

PA

   

63.73**

  

24.05**

 Low

757 (16.4)

64 (8.5)

693 (91.5)

 

86 (11.4)

671 (88.6)

 

 Moderate and above

3867 (83.6)

100 (2.6)

3767 (97.4)

 

245 (6.3)

3622 (93.7)

 

PMPU

   

72.84**

  

87.05**

 Yes

1271 (27.5)

93 (7.3)

1178 (92.7)

 

164 (12.9)

1107 (87.1)

 

 No

33,537 (72.5)

71 (2.1)

3282 (97.9)

 

167 (5.0)

3186 (95.0)

 
  1. Note: * P < 0.05,** P < 0.001; Statistical methods: Chi-square test; PA is Physical activity; PMPU is problematic mobile phone use