The article I choose is adverse effects of smoking on peak bone mass may be attenuated by higher body mass index in young female smokers. The authors and their place of work are as follows: Mattias Callerus, Fiona McGuigan and Kristina Akesson work at the clinical and molecular osteoporosis research unit, department of clinical sciences at Lund University in Lund, Sweden. The corresponding author is Katrina Akesson who also works for the department of orthopaedics at Skane University Hospital in Malmo, Sweden. The research question the authors are trying to answer is if there is a correlation between bone mass (density and fracture risk) and young females aged 25 who currently smoke cigarettes, past smokers and their duration of smoking compared to those women who have never smoked (Callerus, McGuigan & Akesson, 2013. P. 517-518).
Callerus et al. (2013) study consisted of 1,061 women aged 25 (peak bone mass age) from Malmo, Sweden who enrolled in the study between 1999 and 2004 with written informed consent (p. 518). Callerus et al. (2013) had the participants fill out a questionnaire which consisted of a list of factors- bone health, physical activity and fracture (p. 518). The guide lines for physical activity were classified using the Recreational Activity Level score whereas fractures were self-reported; fractures that occurred before the age of 15 were not included (p. 518). In the smoking classification section data was available for 1,054 women who classified themselves at current smokers, former smokers and never smoked (p. 518-519). Callerus et al. (2013) broke up cigarette smoking up into two categories, which are: cigarettes a day and pack-years (p.518). The authors further sub-categorized smoking into continuous variables: cig/day 20; duration 10 years; pack-years 6; age smoking started 18 years; and time since smoking stopped 24 months (p. 518). Callerus et al. (2013) were interested in specific regions of bone, the femoral