. 2013 Oct 22;148(6):635–646. doi: 10.1530/REP-13-0488
This work is licensed under a Table 2.
Characteristics of 166 young men by tertiles of maternal pregnancy week 30 serum ΣPCB and p,p′-DDE concentrations.
| ΣPCB | p,p′-DDE | |||||||
|---|---|---|---|---|---|---|---|---|
| Low (2.14–8.02pmol/ml), n=55 | Medium (>8.02–11.47pmol/ml), n=56 | High (>11.47–34.99pmol/ml), n=55 | P value | Low (0.73–6.30pmol/ml), n=55 | Medium (>6.30–10.63pmol/ml), n=56 | High (>10.63–55.32pmol/ml), n=55 | P value | |
| Characteristics of sons | ||||||||
| BMI (kg/m2), median (p25–p75) | 22.7 (20.9–24.4) | 22.6 (20.5–24.5) | 23.0 (20.6–24.1) | 0.77 a | 22.3 (20.3–24.0) | 22.8 (20.8–24.4) | 22.8 (20.9–24.2) | 0.64 a |
| History of reproductive tract disease b | 7 (13.7) | 8 (16.0) | 7 (13.2) | 0.91 c | 9 (17.7) | 7 (13.7) | 6 (11.5) | 0.67 c |
| Current/ occasional smoker | 26 (49.1) | 25 (49.0) | 29 (54.7) | 0.80 c | 27 (51.9) | 29 (54.7) | 24 (46.2) | 0.67 c |
| Characteristics of mothers | ||||||||
| Mother smoking during pregnancy | 18 (33.3) | 15 (27.3) | 18 (35.3) | 0.65 c | 16 (30.2) | 18 (33.3) | 17 (32.1) | 0.94 c |
| Socioeconomic status (Total annual household income 1987) | ||||||||
| <200 000 DKK | 23 (46.9) | 21 (39.6) | 15 (30.0) | 0.22 c | 21 (43.8) | 21 (38.9) | 17 (34.0) | 0.61 c |
| >200 000 DKK | 26 (53.1) | 32 (60.4) | 35 (70.0) | 0.22 c | 27 (56.3) | 33 (61.1) | 33 (66.0) | 0.61 c |
| Serum total lipid level (g/l), median p25–p75) | 8.2 (7.5–9.0) | 8.6 (7.6–9.3) | 9.0 (7.8–10.3) | 0.01 a | 8.3 (7.5–9.3) | 8.6 (7.6–9.6) | 8.5 (7.7–10.1) | 0.43 a |
| Characteristics of sons' semen and serum | ||||||||
| Duration of abstinence (h) | ||||||||
| ≤48 | 23 (41.8) | 33 (58.9) | 35 (64.8) | 0.04 c | 23 (41.8) | 35 (62.5) | 33 (61.1) | 0.05 c |
| ≥49 | 32 (58.2) | 23 (41.1) | 19 (35.2) | 0.04 c | 32 (58.2) | 21 (37.5) | 21 (38.9) | 0.05 c |
| Min. from ejaculation to semen analysis, median (p25–p75) | 43.5 (30.0–55.0) | 40.0 (27.5–55.0) | 50.0 (35.0–60.0) | 0.25 a | 37.5 (25.0–50.0) | 45.0 (30.0–57.5) | 50.0 (35.0–55.0) | 0.11 a |
| Spillage at semen sampling | 14 (27.5) | 14 (26.4) | 16 (30.8) | 0.88 c | 10 (19.6) | 15 (28.3) | 19 (36.5) | 0.16 c |
| Time for blood sampling | ||||||||
| 0730–0929 | 19 (35.2) | 15 (27.3) | 19 (35.2) | 0.60 c | 18 (32.7) | 16 (29.1) | 19 (35.9) | 0.79 c |
| 0930–1129 | 29 (53.7) | 29 (52.7) | 24 (44.4) | 0.60 c | 31 (56.4) | 28 (50.9) | 23 (43.4) | 0.79 c |
| 1130– | 6 (11.1) | 11 (20.0) | 11 (20.4) | 0.60 c | 6 (10.9) | 11 (20.0) | 11 (20.8) | 0.79 c |
Numbers are based on complete case data and indicate number (percentage) unless otherwise stated.
a
Differences across tertiles of ΣPCB and p,p′-DDE exposure where tested by Kruskal–Wallis test.
b
History of reproductive tract disease include: inguinal hernia, varicocele, testicular hydrocele, incarcerated hernia, phimosis, torsio testis, clamydia, gonorrhea, and epididymitis combined into one variable (yes/no).
c
Differences across tertiles of ΣPCB and p,p′-DDE exposure where tested by χ 2-test.