Cases n = 85 (%)

Controls n = 85 (%)

p-value

Age (years)

11 - 20

21 - 30

31 - 40

41 - 50

Socioeconomic status

High

Middle

Low

Marital status

Married

Single

Educational level

None

Primary

Secondary

Tertiary

Religion

Christian

Islam

Tribe

Yoruba

Igbo

Hausa

Others

4 (4.7)

45 (52.9)

33 (38.8)

3 (3)

Mean = 29.89 ± 5.22.

0 (0)

30 (35.3)

55 (64.7)

79 (92.9)

6 (7.1)

7 (8.2)

24 (28.2)

33 (38.8)

21 (24.7)

58 (69.0)

26 (31.0)

61 (71.8)

16 (18.8)

0 (0)

8 (9.4)

0 (0)

63 (74)

25 (26)

0 (0)

Mean = 29.56 ± 3.68

0 (0)

77 (90)

8 (10)

83 (98)

2 (2)

0 (0)

0 (0)

17 (20)

68 (80)

67 (79)

18 (21)

61 (72)

14 (16)

1 (1)

9 (11)

p = 0.0032

p = 0.0001

p = 0.0918

p = 0.0001

p = 0.1231

p = 0.7590