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. 2013 Aug 1;36(8):1199–1207. doi: 10.5665/sleep.2886

Figure 2.

Figure 2

The relationship between neck circumference (NC) and the slope of the pressure flow relationship (SPF) is shown for the three groups. In the lean control patients and the OSAS group, increased NC was associated with increased activated SPF, whereas in obese control patients it was associated with decreased activated SPF. In contrast, increased NC was associated with increased hypotonic SPF in all three groups.