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Table 3 Association of para-occupational exposure to pesticides during pregnancy and PON1 genotypes with maternal hypothyroxinemia

From: Para-occupational exposure to pesticides, PON1 polymorphisms and hypothyroxinemia during the first half of pregnancy in women living in a Mexican floricultural area

Characteristics

All women

n = 381(%)

Hypothyroxinemia

p for trend

Yes

n = 207 (%)

No

n = 174 (%)

Crude OR (95%CI)

Adjusted OR (95%CI)

Para-occupational exposure to pesticides during pregnancya

 No

219 (57.48)

113 (54.59)

106 (60.92)

1.0

1.0

 

 Yes

162 (42.52)

94 (45.41)

68 (39.08)

1.35 (0.88–2.06)

1.21 (0.75–1.94)

 

PON1 192QR b

 QQ

119 (31.23)

62 (29.95)

57 (32.76)

1.0

1.0

0.11

 QR

161 (42.26)

82 (39.61)

79 (45.40)

0.89 (0.54–1.45)

0.87 (0.52–1.47)

 RR

101 (26.51)

63 (30.43)

38 (21.84)

1.68 (0.95–2.96)

1.66 (0.92–2.99)

 Q allele

399 (52.30)

206 (49.75)

193 (55.39)

1

 

 R allele

363 (47.55)

208 (50.12)

155 (44.48)

1.31 (0.98–1.77)

1.30 (0.96–1.77)

PON155LM*b

 LL

195 (51.18)

93 (44.93)

102 (58.62)

1.0

1

0.001

 LM

103 (27.03)

52 (25.12)

51 (29.31)

0.95 (0.58–1.55)

1.10 (0.65–1.84)

 MM

83 (21.78)

62 (29.95)

21 (12.07)

2.47 (1.37–4.45)

3.01 (1.63–5.57)

 L allele

493 (64.58)

238 (57.35)

255 (73.18)

1

1

 M allele

269 (35.23)

176 (42.41)

93 (26.69)

1.67 (1.21–2.29)

1.93 (1.38–2.69)

PON1–108CT*b

 CC

130 (34.12)

61 (29.47)

69 (39.66)

1.0

1

0.21

 CT

140 (36.75)

83 (40.10)

57 (32.76)

1.36 (0.82–2.24)

1.36 (0.81–2.31)

 TT

111 (29.13)

63 (30.43)

48 (27.59)

1.38 (0.81–2.35)

1.42 (0.82–2.44)

 C allele

400 (52.48)

205 (49.40)

195 (55.96)

1

1

 T allele

362 (47.42)

209 (50.36)

153 (43.91)

1.23 (0.92–1.66)

1.25 (0.92–1.70)

  1. aModel adjusted by: maternal age, education, gestational age, coffee intake, body mass index and maternal PON 1 Genotypes
  2. bModel adjusted by: maternal age, education, gestational age, coffee intake, body mass index and para-occupational exposure to pesticides during pregnancy
  3. *D’ between PON155LM and PON1–108CT polymorphisms p = 0.82; Hardy–Weinberg equilibrium for all polymorphisms: p < 0.05