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Table 2 Regression coefficients and probability values to determine the association between seminal parameters and exposure and time of exposure to ethylated OP metabolites.

From: Semen quality in Peruvian pesticide applicators: association between urinary organophosphate metabolites and semen parameters

  Exposure to pesticides (β ± SEM) P P* adjusted Time of exposure to pesticides (β ± SEM) P P* adjusted
Time of liquefaction minutes -1.53 ± 1.74 0.38 0.75 0.11 ± 0.31 0.71 0.93
Seminal Volume mL -0.72 ± 0.31 0.02 0.12 -0.09 ± 0.06 0.15 0.28
pH 0.29 ± 0.09 0.002 0.002 0.03 ± 0.02 0.07 0.001
Log Corrected fructose -0.17 ± 0.09 0.06 0.15 -0.04 ± 0.01 0.01 0.53
Log Seminal zinc -0.05 ± 0.09 0.58 0.30 -0.02 ± 0.02 0.26 0.38
Log sperms/mL -0.14 ± 0.12 0.25 0.84 -0.02 ± 0.02 0.44 0.89
Log sperms/ejaculum -0.24 ± 0.15 0.10 0.60 -0.04 ± 0.03 0.15 0.80
Sperm Vitality % 2.07 ± 1.79 0.25 0.06 -0.21 ± 0.32 0.51 0.13
Log motility grade 3 (%) -0.02 ± 0.09 0.78 0.71 -0.02 ± 0.02 0.14 0.82
Log motility grade 3 + 2 (%) -0.05 ± 0.05 0.32 1.00 -0.02 ± 0.01 0.13 0.74
Sperm with normal morphology (%) -7.65 ± 2.16 0.001 0.76 -1.04 ± 0.42 0.01 0.42
Immature sperm (%) 1.89 ± 1.48 0.21 1.00 0.17 ± 0.26 0.51 0.50
Log Seminal leucocytes 0.59 ± 0.09 0.00 1.00 0.02 ± 0.02 0.36 0.97
Serum testosterone (ng/mL) -0.62 ± 0.41 0.13 0.69 -0.10 ± 0.07 0.16 0.99
Log Serum estradiol (pg/ml) 0.06 ± 0.07 0.43 0.26 0.03 ± 0.01 0.02 0.65
Log Serum FSH (mIU/mL) 0.17 ± 0.18 0.34 0.86 0.01 ± 0.03 0.72 1.00
Log Serum LH (mIU/mL) -0.37 ± 0.21 0.07 0.97 -0.10 ± 0.03 0.01 0.99
Log T/E2 (ng/pg) -0.11 ± 0.07 0.12 0.18 -0.04 ± 0.01 0.01 0.63
Log T/LH (ng/mIU) 0.32 ± 0.20 0.13 1.00 0.01 ± 0.03 0.01 0.85
  1. Regressions adjusted for age and alcohol consumption. Exposure to pesticide: 0 = non exposed; 1 = exposed. Ethylated metabolites of OPs: 0 = non detectable; 1 = over limit of detection. Time of exposure to pesticides (continuous variable). β ± SEM: Coefficient of regression ± Standard error of the mean. Data with non parametric behavior were log-transformed in order to performed linear regression analyses. *Holm adjustment.
  2. +Analyses were performed after controlling for urine levels of ethylated OP metabolites, respectively.