Smoking Relapse and Type 2 Diabetes Mellitus–Related Emergency Department Visits Among Senior Patients with Diabetes
ORIGINAL RESEARCH — Volume 16 — December 19, 2019
PEER REVIEWED
Patients included in the study reporting their smoking status at least once during January 1, 2010, through December 31, 2010 (N = 130,281). To select the sample from among those patients, patients who did not have type 2 diabetes treatment recorded were excluded (n = 118,694). Of those who were included (n = 11,587), patients who were not aged 65 years or older were excluded (n = 9,114). Of those who were included (n = 2,473), patients for whom the duration between first and last smoking status was not 90 days or more were excluded (n = 359). This resulted in N = 2,114 study patients for analysis.
Figure 1. Sample selection for study of type 2 diabetes mellitus and smoking, Louisiana State University Health Care Services Division, 2009–2011.
The diagram illustrates how smoking status of patients was categorized on the basis of their initial status, the duration between initial and last status, and their last status. The first group is patients whose initial status was that they had not smoked in the past 30 days and in the past year. In the duration between initial and last status, they were categorized as either “No smoking status change” or “At least 1 change from not smoking to smoking.” From these 2 groups, those whose last status was “Has not smoked in past 30 days” were designated either nonsmokers (n = 1,777) or former smokers (n = 33); those whose last status was “Has smoked in the past 30 days” were designated relapsed smokers (n = 43).
The second group is patients whose initial status was that they had not smoked in the past 30 days but had smoked in the past year. In the duration between initial and last status, they were categorized as either “No smoking status change” or “At least 1 change from not smoking to smoking.” Those whose last status was “Has not smoked in past 30 days” were designated former smokers (n = 4); those whose last status was “Has smoked in the past 30 days” were designated relapsed smokers (n = 5).
The third group is patients whose initial status was that they had smoked in the past 30 days and in the past year. In the duration between initial and last status, they were categorized as either “At least 1 change from not smoking to smoking” or “No smoking status change.” Those whose last status was “Has not smoked in past 30 days” were designated former smokers (n = 49); those whose last status was “Has smoked in the past 30 days” were designated relapsed smokers (n = 29) or continuing smokers (n = 174).
Figure 2.
Patterns of identifying smoking status among patients with type 2 diabetes mellitus, Louisiana State University Health Care Services Division, 2009–2011. There was no significant difference in days of duration between initial and last status across 4 smoking status groups (P = .667).
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