Table 1 Subject characteristics (n = 168).

From: Early-life activities mediate the association between family socioeconomic status in early childhood and physical fitness in early adolescence

Study variables

Participants assessed

Age at wave 3 health assessment (mean, SD)

12.39 (0.35)

Age at wave 1 assessment (mean, SD)

5.51 (0.30)

Gender, n (%)

Boys

86 (51.2)

Girls

82 (48.8)

Having doctor-diagnosed physical diseases, n (%)

65 (38.7)

Physical fitness (Wave 3)

Six-minute walk performance in meter (mean, SD)

600.58 (83.05)

Standing long-jump performance in centimeter (mean, SD)

130.29 (22.63)

Handgrip strength performance in kilogram (mean, SD)

35.59 (9.22)

Socioeconomic status (Wave 1)

Family socioeconomic status index (mean, SD)

0.23 (0.98)

Monthly household income in USD (mean, SD)

6282 (3836)

Maternal education level, n (%)

Bachelor’s degree or above

63 (37.5)

Grade 10 to diploma

69 (41.1)

Grade ≤ 9

36 (21.4)

Father education level, n (%)

Bachelor degree or above

72 (42.9)

Grade 10 to diploma

59 (35.1)

Grade ≤ 9

35 (20.8)

Missing

2 (1.2)

Maternal occupation at Wave 1, n (%)

Professionals

60 (35.7)

Non-professionals

41 (24.4)

Unemployed

17 (10.1)

Homemaker

31 (18.5)

Missing

19 (11.3)

Father occupation at Wave 1, n (%)

Professionals

114 (67.9)

Non-professionals

46 (27.4)

Unemployed

4 (2.4)

Homemaker

0 (0.0)

Missing

4 (2.4)