1. Fertility and Sterility
Male smokers have a decreased success rate for in vitro fertilization and intracytoplasmic sperm injection 
Michael Zitzmann, M.D., Claus Rolf, M.D., Verena Nordhoff, Ph.D., Guido Schräder, M.D., Melanie Rickert-Föhring, Ph.D., Paul Gassner, Ph.D., Hermann M Behre, M.D., Ph.D., Robert R Greb, M.D., Ludwig Kiesel, M.D., Ph.D., Eberhard Nieschlag, M.D., Ph.D. 
Fertility and Sterility 
Volume 79, Pages (June 2003)
DOI: /S (03)00339-X

2. FIGURE 1
Unless otherwise stated, results are given as mean ± SD. Levels of statistical significance are given as asterisks (*,**,***) representing P values of <.05, <.01, and <.001, respectively. Percentage of clinical pregnancies in ICSI and IVF cycles comparing smoking with nonsmoking male partners and analyzing the first treatment cycles only. *P<.05; **P<.01 (χ2 test). Filled bars = male smokers; open bars = male nonsmokers.
Zitzmann. Male smokers and ICSI. Fertil Steril 2003.
Fertility and Sterility  , DOI: ( /S (03)00339-X)

3. FIGURE 2
Predictors of subsequent steps of assisted reproduction. Results concerning oocyte retrieval and oocyte fertilization were obtained by ANCOVA; results concerning implantation and fetal heartbeat (clinical pregnancy), by multinominal logistic regression. mot. = motility; embryos (n) = number of transferred embryos (ranging from 1 to 3); # = in oocyte fertilization, male smoking was only significant in interaction with female smoking, but not alone; ## = male age showed a trend as negative predictor concerning the outcome of IVF but was not significant.
Zitzmann. Male smokers and ICSI. Fertil Steril 2003.
Fertility and Sterility  , DOI: ( /S (03)00339-X)