Anyway...
To review, and as previously noted, statistics can be very misleading, especially when small sample sizes are used, and there may be significant bias in patient selection.
For instance, in the case of trying to demonstrate a relationship between FBM and SDB:
Previous studies, although also involving small study samples, have demonstrated a relationship between SDB and FMS. In 1986, Molony et al. studied eleven patients with OSAHS and reported that three met the criteria proposed for the diagnosis of FMS, concluding that frequent OSAHS awakenings could be a cause of FMS.(24) In 1993, another group of authors detected OSAHS in 11 out of 25 men with FMS.(17) Still others, in 2004, found SDB in 27 of 28 women with FMS.(18) However, in various other studies involving larger study samples, no association between FMS and SDB has been observed.(25-28)
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-37132006000400012&lng=en&nrm=iso&tlng=en
Conflicting results have been reported on the prevalence of fibromyalgia observed in patients with sleep apnea; it was significantly increased versus a control group according to Germanowicz [4], but was not according to Plantamura and colleagues [3].
http://arthritis-research.com/content/10/6/409