The effect of cigarette smoking, alcohol consumption and fruit and vegetable consumption on IVF outcomes: a review and presentation of original data

Table 2 Multiple logistic regression analysis of in vitro fertilisation rates^a,b,c (n = 152)

Variable	β Coefficient	Standard error	P
Constant	0.277	0.214	0.196
Female nicotine (mg/wk)	−0.012	0.009	0.176
Female smoke (years)	−0.047	0.010	< 0.001
Female smoke years*nicotine	0.001	< 0.001	0.044
Male alcohol (std drinks/wk)	0.074	0.014	< 0.001
Male F&V (serves/wk)	0.034	0.007	< 0.001
Male alcohol*F&V	−0.001	0.001	0.011

*depicts the potential interaction between two terms analysed by logistic regression
^aY = no. of oocytes fertilised (2PN) weighted by total no. of oocytes retrieved
^badjusted R² = 0.236, deviance = 281.508, 141df, P < 0.001
^cnon-significant variables: female age, female alcohol, female F&V, male age, oligozoospermia, asthenozoospermia, teratozoospermia, male nicotine and male smoke years

ISSN: 1477-7827