Logistic regression was performed to establish the risk factors of preterm birth in the study population. Differences were noted only between the expression of cannabinoid receptors and occurrence of preterm birth. The odds ratios (OR) for the CBR1, CBR1a and CBR2 were 0.01 (95%CI: 0.01 – 0.69), 0.01 (95%CI: 0.01 – 0.80), and 0.01 (95%CI: 0.01 – 0.52), respectively. The results of the regression are presented in Table 3.
Discussion