Risk ratio of SH with 95% CI and p values for different risk factors
| Risk factor | Univariate analysis—SH risk ratio 95% CI | p Value |
| Gender | 1.0 (0.9 to 1.2) | 0.91 |
| Age (years) | ||
| 0–4 | 1.1 (0.8 to 1.5) | 0.62 |
| 5–9 | 0.9 (0.8 to 1.1) | 0.24 |
| 10–14 | 1.0 | |
| Duration (years) | ||
| 1–2 | 0.8 (0.7 to 1.0) | 0.06 |
| 2–3 | 0.9 (0.7 to 1.1) | 0.16 |
| 3–4 | 1.0 (0.8 to 1.2) | 0.99 |
| 4–5 | 1.0 (0.8 to 1.2) | 0.83 |
| >5 | 1.0 | |
| Year | ||
| 2008 | 1.3 (1.0 to 1.6) | 0.02 |
| 2009 | 1.5 (1.3 to 1.8) | <0.01 |
| 2010 | 1.2 (0.98 to 1.4) | 0.07 |
| 2011 | 1.3 (1.0 to 1.5) | 0.02 |
| 2012 | 1 | |
| HbA1c (mmol/mol) | ||
| ≤50 | 0.7 (0.6 to 0.9) | 0.04 |
| >50−≤60 | 0.9 (0.7 to 1.0) | 0.08 |
| >60−≤70 | 1.0 | |
| >70 | 1.0 (0.9 to 1.2) | 0.91 |
| Treatment | ||
| Pen versus pump | 1.3 (1.1 to 1.5) | <0.01 |
| Insulin dose (IU/kg/day) | ||
| ≤0.6 | 0.8 (0.6 to 1.1) | 0.07 |
| >0.6−≤0.8 | 1.0 | |
| >0.8−≤1.0 | 1.3 (1.1 to 1.6) | <0.01 |
| >1.0−≤1.2 | 1.3 (1.1 to 1.6) | <0.01 |
| ≥1.2 | 1.2 (1.0 to 1.5) | 0.09 |
| BMISDS | ||
| ≤ −2 | 0.8 (0.4 to 1.8) | 0.59 |
| > −2 to ≤−1 | 0.8 (0.6 to 1.1) | 0.16 |
| >−1 to ≤0 | 0.8 (0.7 to 0.98) | 0.03 |
| 0−≤1 | 1.0 | |
| >1−<2 | 1.1 (0.9 to 1.3) | 0.25 |
| ≥2 | 1.0 (0.8 to 1.3) | 0.85 |
Second column showing results of univariate analyses.
BMISDS, body mass index SD score; HbA1c, hemoglobin A1c; SH, severe hypoglycemia.