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Table 4 Forward stepwise selection of predictive model for hyperlactataemia

From: Predictors of hyperlactataemia among children presenting with malaria in a low transmission area in The Gambia

Model

p-value for additional variable

Akaike information criterion

Area under the receiver operating characteristic (ROC) curve

Age + sex

 

291.6

0.6

Age + sex + Blantyre score

1.7 × 10-09

254

0.76

Age + sex + Blantyre score +% parasitaemia

8.2 × 10-06

236.1

0.83

Age + sex + Blantyre score +% parasitaemia + age-specific respiratory rate ratio

5.0 × 10-04

225.6

0.84

Age + sex + Blantyre score +% parasitaemia + age-specific respiratory rate ratio + deep breathing

0.018

222.2

0.85

  1. Note: models were fitted among the 407 children with non-missing data for all the variables in the initial model selection process (see Methods).