Skip to main content

Table 2 Parental, child, and household characteristics of sample

From: Prevalence, correlates, and trajectory of screen viewing among Chinese children in Changsha: a birth cohort study

Sociodemographic Characteristic

Analytic Group

Excluded Group

P value

Observed(n = 953)

Observed(n = 23)

 

Mean ± SD / %

N

Mean ± SD / %

N

 

Children gender

    

0.642

 Male

492 (51.6)

953

13 (56.5)

23

 

 Female

461 (48.4)

10 (43.5)

 

Family member number

4.31 (0.95)

953

4.0 (0.8)

23

0.166

Pregnant weight (kg)

68.38 (9.11)

953

69.6 (10.4)

23

0.525

Physical activity in pregnant period (minutes/day)

46.69 (25.94)

953

47.2 (22.2)

23

0.93

Pregnancy exercise (yes)

820 (86.9)

944

18 (81.8)

22

0.49

Pregnancy exercise intensity

    

0.791

 Low intensity exercise

810 (99.6)

813

19 (100)

19

 

 Moderate exercise

3 (0.4)

0 (0)

 

Mother physical activity behavior

275 (29.8)

923

7 (58.3)

12

0.032

Mother physical activity

 

278

 

7

0.651

 Low intensity exercise

224 (80.6)

 

5 (71.4)

  

 Moderate exercise

46 (16.5)

 

2 (28.6)

  

Heavy exercise

8 (2.9)

 

0 (0)

  

Pregnancy computer use

318 (80.7)

383

0 (0)

5

0.551

Pregnancy phone use

323 (96.7)

334

4 (100)

4

0.712

Maternal race (Han)

921 (96.6)

944

23 (100)

23

0.671

Maternal age (years)

29.92 (3.92)

953

30.6 (4.7)

23

0.398

Educational level

 

942

 

22

0.721

 Less than primary school

2 (0.2)

 

0 (0)

  

 Middle school

31 (3.3)

 

0 (0)

  

 High school

114 (12.1)

 

4 (18.2)

  

 University

722 (76.6)

 

15 (68.2)

  

 Graduate school

69 (7.3)

 

3 (13.6)

  

 Other education

4 (0.4)

 

0 (0)

  

Maternal occupation

 

940

 

22

0.787

 1

35 (3.7)

 

0 (0)

  

 2

178 (18.7)

 

6 (26.1)

  

 3

365 (38.3)

 

8 (34.8)

  

 4

2 (0.2)

 

0 (0)

  

 5

5 (0.5)

 

0 (0)

  

 6

355 (37.3)

 

8 (34.8)

  

Paternal race (Han)

920 (96.5)

943

23 (100)

23

0.364

Paternal age (years)

32.06 (4.85)

953

33.0 (6.9)

23

0.384

Educational level

 

941

 

23

0.725

 Less than primary school

4 (0.4)

 

0 (0)

  

 Middle school

25 (2.7)

 

1 (4.3)

  

 High school

109 (11.6)

 

2 (8.7)

  

 University

690 (73.3)

 

15 (65.2)

  

 Graduate school

108 (11.5)

 

5 (21.7)

  

 Other education

5 (0.5)

 

0 (0)

  

Paternal occupation

 

933

 

23

0.658

 1

55 (5.8)

 

1 (4.3)

  

 2

240 (25.2)

 

3 (13)

  

 3

303 (31.8)

 

7 (30.4)

  

 4

3 (0.3)

 

0 (0)

  

 5

42 (4.4)

 

2 (8.7)

  

 6

290 (30.4)

 

10 (43.5)

  

Infant weight (kg)

3.33 (0.46)

953

3.37 (0.57)

23

0.686

Household income (yuan/month)

     

 Less than 2000 yuan/month

31 (3.4)

922

0 (0)

23

0.259

 2001–5000 yuan/month

493 (53.5)

9 (39.1)

 

 5001–10,000 yuan/month

360 (39.0)

14 (60.9)

 

 10,001–15,000 yuan/month

28 (3.0)

0 (0)

 

 More than 15,000 yuan/month

10 (1.1)

0 (0)

 

Pregnancy depression

29 (3.0)

953

0 (0)

23

0.396