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Table 4 Cryptorchidism in sons of mothers working in horticulture during pregnancy-separate analyses for each cohorta

From: The risk of cryptorchidism among sons of women working in horticulture in Denmark: a cohort study

Maternal characteristic

Study population, n

Cryptorchidism

Orchiopexy

  

n

%

Crude HR

Adjusted HRb (95%CI)

n

%

Crude HR

Adjusted HRb (95%CI)

Background pop.

783,817

16.900

2.2

1

(ref.)

1

(ref.)

11,836

1.5

1

(ref.)

1

(ref.)

Exposed cohort 1

226

7

3.1

1.25

1.34 (0.64;2.82)

4

1.8

0.99

1.06 (0.40;2.82)

Exposed cohort 2

108

5

4.6

2.83

2.58 (1.07;6.20) c

2

1.9

1.49

1.50 (0.38;6.00)

Exposed cohort 3

68

-

-

∙∙

∙∙

-

-

∙∙

∙∙

Exposed cohort 4

100

3

3.0

1.44

1.44 (0.46;4.47)

4

4.0

2.72

2.76 (1.03;7.35) c

  1. a Each cohort compared to an external control group of all Danish boys in the study period.
  2. b Results are adjusted for gestational age at birth, calendar year of birth and maternal age.
  3. c HR is statistically significantly different from 1.