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Table 2 Sociodemographic profile of the subjects

From: A pilot study to determine the short-term effects of milk with differing glycaemic properties on sleep among toddlers: a randomised controlled trial

Characteristics (n = 56)

LGI n (%)

HGI n (%)

Total n (%)

Age (months)

14–18

11 (39.3)

14 (51.9)

24 (43.6)

19–24

17 (60.7)

13 (48.1)

31 (56.4)

Mean ± S.D.

20.46 ± 3.8

19.30 ± 4.7

19. 9 ± 4.3

Sex

Male

10 (34.5)

11 (40.7)

21 (37.5)

Female

19 (65.5)

16 (59.3)

35 (62.5)

Ethnicity

Malay

27 (96.4)

27(96.4)

54 (96.4)

Others

1 (3.6)

1(3.6)

2 (3.6)

Mother’s age (years)(n=47)

≤30

18 (62.1)

14 (51.9)

32 (57.1)

31–35

7 (24.2)

8 (29.6)

15 (26.8)

Mean ± S.D.

30.5 ± 4.1

31.30 ± 4.3

30. 9 ± 4.1

Father’s age (years) (n = 54)

≤30

8 (29.6)

12 (44.5)

20 (37.0)

31–35

12 (44.5)

5 (18.5)

17 (31.5)

>36

7(25.9)

10(37.0)

17 (31.5)

Mean ± S.D.

32.8 ± 4.4

33.8 ± 6.1

33.3 ± 5.3

Mother’s education (n = 56)

Secondary

9 (31.0)

5(18.5)

14(25.0)

College/University

20 (69.0)

22 (81.5)

42 (75.0)

Father’s education (n = 54)

Secondary

7 (25.9)

4(14.8)

11(20.4)

College/University

20 (74.1)

23 (85.2)

43 (79.6)

Mother’s occupation [53] (n = 55)

Managers and professionals

4 (13.8)

10 (38.4)

14 (25.4)

Technicians/Associate professionals

14 (48.3)

6 (23.2)

20 (36.4)

Clerical support workers

10 (34.5)

8 (30.8)

18 (32.7)

Service and sales workers

0 (0.0)

1 (3.8)

1 (1.8)

Business owner

1 (3.4)

1 (3.8)

2 (3.7)

Father’s occupation [53] (n = 52)

Managers and professionals

7 (25.9)

6 (24.0)

13 (25.0)

Technicians and associate professionals

11 (40.8)

13 (52.0)

24 (46.1)

Clerical support workers

2 (7.4)

1 (4.0)

3 (5.8)

Service and sales workers

3 (11.1)

0 (0.0)

3 (5.8)

Plant and machine operators and Assemblers/ Elementary occupations

2 (7.4)

2(8.0)

4 (7.7)

Business owner

2 (7.4)

3 (12.0)

5 (9.6)

Household monthly income (n = 56)

<4000

12(41.4)

7(26.0)

19(34.0)

RM4000 – 5999

7 (24.1)

9 (33.3)

16 (28.6)

RM6000 – 7999

7 (24.1)

7 (25.9)

14 (25.0)

≥RM8000

3 (10.4)

4 (14.8)

7 (12.4)

Number of siblings (n = 55)

No siblings

1 (3.4)

1 (3.8)

2 (3.6)

1–2

15 (51.7)

17 (65.4)

32 (58.3)

3–4

11 (37.9)

8 (30.8)

19 (34.5)

≥5

2 (6.9)

0 (0.0)

2 (3.6)

Child’s Birth Weight (kg) (n = 53)

Low birth weight [37] (<2.5)

1 (3.4)

2 (8.3)

3 (5.7)

Normal birth weight (2.5–3.99)

27 (93.2)

22 (91.7)

49 (92.4)

High birth weight (≥4.00)

1 (3.4)

0 (0.0)

1 (1.9)

Mean ± S.D.

3.1 ± 0.4

3.00 ± 0.5

3.1 ± 0.4

  1. MASCO [53], Principles of Classification of Occupations (3rd Ed.). Putrajaya: Ministry of Human Resources
  2. UNICEF and WHO [36]