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Table 4 Relationship between level of a metabolic marker and predicted probability of death

From: Statistics review 14: Logistic regression

Metabolic marker level (x)

Number of patients

Number Number of deaths

Proportion of deaths

Predicted probability

Expected number of deaths

0.5 to <1.0

182

7

0.04

0.04

8.2

1.0 to <1.5

233

27

0.12

0.10

24.2

1.5 to <2.0

224

44

0.20

0.23

50.6

2.0 to <2.5

236

91

0.39

0.41

96.0

2.5 to <3.0

225

130

0.58

0.62

140.6

3.0 to <3.5

215

168

0.78

0.80

171.7

3.5 to <4.0

221

194

0.88

0.90

199.9

4.0 to <4.5

200

191

0.96

0.96

191.7

≥4.5

264

260

0.98

0.98

259.2