Distance to Specialist Medical Care and Diagnosis of Obstructive Sleep Apnea in Rural Saskatchewan

Table 6

Results of multivariable log-binomial regression modeling probability of an incident sleep apnea diagnosis after 5 years among adults with obstructive sleep apnea symptoms in the absence of a sleep apnea diagnosis (n = 1459; 1180 households).

Exposure	Proportion (%)	Obstructive sleep apnea symptoms in the absence of a sleep apnea diagnosis (row %)	Unadjusted model RR (95% CI)	Adjusted model^a RR (95% CI)	value
Travel distance to specialist medical care, km
<100	20	94.8	1.00 (referent)	1.00 (referent)	0.80
100–189	26	95.4	0.87 (0.44, 1.71)	1.00 (0.97, 1.04)	0.84^b
190–249	26	96.4	0.69 (0.34, 1.41)	1.01 (0.98, 1.05)
≥250	28	96.1	0.74 (0.37, 1.47)	1.01 (0.98, 1.05)

^aModel adjusted for age, sex, body mass index, money left over at the end of the month, education level, heavy alcohol consumption, and smoking status. Standard errors corresponding to confidence intervals were inflated to account for clustering of adults within households. ^b value for trend test.