Logistic regression analysis | ||||||||||||||||||||||
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Unadjusted analysis | Adjusted analysis1-150 | |||||||||||||||||||||
Classification factor | Levels of factor | Total episodes of DKA | No. episodes of DKA affected by cerebral odema | Risk (per 1000) | Odds ratios | 95% CI | p value for the likelihood ratio test of homogeneity across factor levels | Odds ratios | 95% CI | p value for the likelihood ratio test of homogeneity across factor levels | ||||||||||||
Sex | Female | 1707 | 9 | 5.3 | 11-151 | 11-151 | ||||||||||||||||
Male | 1233 | 11 | 8.9 | 1.7 | (0.7, 4.1) | 0.239 | 1.5 | (0.6, 3,6) | 0.391 | |||||||||||||
Age (y) | 0–3 | 303 | 4 | 13.2 | 2.9 | (0.7, 5.5) | 1.5 | (0.5, 4.4) | ||||||||||||||
4–7 | 387 | 2 | 5.2 | 1.1 | (0.2, 5.6) | 0.3731-152 | 0.7 | (0.1, 3.9) | 0.7381-152 | |||||||||||||
8–11 | 933 | 8 | 8.6 | 1.9 | (0.8, 10.4) | 0.1751-153 | 1.5 | (0.4, 5.9) | 0.7911-153 | |||||||||||||
12–15 | 1317 | 6 | 4.6 | 11-151 | 11-151 | |||||||||||||||||
Old or newly diagnosed | Old | 1845 | 7 | 3.8 | 11-151 | 11-151 | ||||||||||||||||
New | 1095 | 13 | 11.9 | 3.2 | (1.3, 7.9) | 0.012 | 2.9 | (1.1, 8.0) | 0.039 | |||||||||||||
Season | Spring | 661 | 5 | 7.6 | 11-151 | 11-151 | ||||||||||||||||
(Mar–May) | ||||||||||||||||||||||
Summer | 666 | 3 | 4.5 | 0.6 | (0.1, 2.5) | 0.8241-152 | 0.6 | (0.1, 2.3) | 0.7861-152 | |||||||||||||
(Jun–Aug) | ||||||||||||||||||||||
Autumn | 766 | 5 | 6.5 | 0.9 | (0.2, 3.0) | 0.9 | (0.2, 3.0) | |||||||||||||||
(Sep–Nov) | ||||||||||||||||||||||
Winter | 847 | 7 | 8.3 | 1.1 | (0.3, 3.5) | 1.1 | (0.3, 3.4) | |||||||||||||||
(Dec–Feb) | ||||||||||||||||||||||
Total | 2940 | 20 | 6.8 |