Table 6.
Logistic regression analysis of factors predicting the absence of antecedent symptoms (n = 211)
| Factor | Odds ratio | 95% confidence interval | P value | ||
|---|---|---|---|---|---|
| Lower limit | Upper limit | ||||
| Age at onset of severe hypoglycemia | 1.012 | 0.988 | 1.037 | 0.320 | |
| Duration of diabetes | 0.975 | 0.944 | 1.008 | 0.139 | |
| HbA1c at onset of severe hypoglycemia | 0.873 | 0.679 | 1.123 | 0.291 | |
| Glucose value at presentation (before treatment) | 0.967 | 0.944 | 0.991 | 0.006 | |
| BMI | 0.884 | 0.813 | 0.962 | 0.004 | |
| Stage of nephropathy | 0.447 | ||||
| Stage 1 | Reference value | ||||
| Stage 2 | 0.763 | 0.321 | 1.811 | 0.539 | |
| Stage 3 | 1.998 | 0.748 | 5.339 | 0.168 | |
| Stage 4 | 0.883 | 0.245 | 3.173 | 0.848 | |
| Stage 5 | 0.934 | 0.247 | 3.538 | 0.920 | |
| Type of diabetes | |||||
| Type 1 | Reference value | ||||
| Type 2 | 0.374 | 0.159 | 0.880 | 0.024 | |
| Peripheral neuropathy | |||||
| Absent | Reference value | ||||
| Present | 3.191 | 1.265 | 8.052 | 0.014 | |
| Autonomic neuropathy | |||||
| Absent | Reference value | ||||
| Present | 1.336 | 0.562 | 3.176 | 0.511 | |
Patients with no missing data for any of the parameters compared (those with no antecedent symptoms, n = 119; those with antecedent symptoms, n = 92)