Table 2 Prevalence of NDs according to demographic characteristics

Sex

Boy

155 (53.60)

101 (62.70)

0.62 (0.54–0.70)

54 (42.20)

0.42 (0.33–0.51)

Girl

134 (46.40)

60 (37.30)

0.373 (0.29–0.45)

74 (57.80)

0.57 (0.48–0.66)

Course

Q5

120 (41.59)

66 (41.00)

0.42 (0.34–0.50)

54 (42.30)

0.42 (0.34–0.52)

Primary

162 (56.10)

90 (55.90)

0.57 (0.49–0.65)

72 (56.30)

0.57 (0.48–0.65)

Place of residence

Ciutadella

122 (42.20)

66 (41.00)

0.41 (0.33–0.49)

56 (43.80)

0.43 (0.35–0.52)

Alajor-Merca-Ferre

52 (18.00)

29 (18.00)

0.18 (0.12–0.25)

23 (18.00)

0.18 (0.11–0.25)

Mao

74 (25.60)

48 (28.6)

0.28 (0.22–0.36)

28 (21.90)

0.21 (0.15–0.30)

EsCaste-St. Lluis

39 (13.30)

18 (11.2)

0.11 (0.06–0.17)

21 (16.40)

0.16 (0.10–0.24)

Economic resources

Low

114 (39.40)

74 (46.00)

0.47 (0.39–0.55)

40 (31.30)

0.31 (0.23–0.40)

Media

27 (9.30)

14 (8.70)

0.08 (0.05–0.14)

13 (10.20)

0.10 (0.05–0.17)

High

142 (49.10)

69 (42.90)

0.43 (0.36–0.52)

73 (57.00)

0.57 (0.48–0.66)

Premature birth

Yes

26 (9.00)

15 (9.30)

0.09 (0.05–0.15)

11 (8.60)

0.08 (0.04–0.15)

Breastfeeding

Yes

221 (76.50)

117 (72.70)

0.73 (0.65–0.79)

104 (81.30)

0.81 (0.73–0.87)

Low birth weight

Yes

34 (11.80)

17 (10.60)

0.10 (0.06–0.16)

17 (13.30)

0.13 (0.08–0.20)

Congenital infection

Yes

6 (2.10)

4 (2.50)

0.02 (0.00–0.06)

2 (1.60)

0.01 (0.00–0.05)

Maternal age > 35 years

Yes

83 (28.70)

40 (24.80)

0.25 (0.18–0.32)

43 (33.60)

0.33 (0.25–0.42)

Paternal age > 45 years

Yes

11 (3.80)

5 (3.10)

0.03 (0.01–0.07)

6 (4.70)

0.04 (0.01–0.10)

Toxicity in pregnancy

Yes

35 (12.10)

22 (13.70)

0.13 (0.08–0.20)

13 (10.20)

0.10 (0.05–0.16)

Childbirth type

Eutocic

165 (57.10)

88 (54.70)

0.54 (0.46–0.62)

77 (60.20)

0.60 (0.51–0.68)

Instrumental

29 (10.0)

20 (12.40)

0.12 (0.07–0.18)

9 (7.00)

0.07 (0.03–0.12)

Cesarean section

94 (32.50)

51 (31.70)

0.31 (0.24–0.39)

43 (33.60)

0.33 (0.25–0.42)

Total

289 (100)

161 (55.7 0)

0.55 (0.49–0.61)

128 (44.3 0)

0.44 (0.38–0.52)