Table 2.

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; HbA_1c, hemoglobin A1c; SH, severe hypoglycemia.