Clinical malaria diagnosis: rule-based classification statistical prototype

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Table 6 Goodness of fit for rule-based classification of patients’ malaria outcome by age

Goodness of fit statistics	5–9 Years		10–17 Years		18 Years and above		Total
Goodness of fit statistics	%	95 % CI	%	95 % CI	%	95 % CI	%	95 % CI
(a) Predictive dataset: Kalisizo Hospital
Sensitivity	0.55	[0.43–0.66]	0.71	[0.62–0.80]	0.72	[0.69–0.76]	0.70	[0.68–0.74]
Specificity	0.50	[0.35–0.67]	0.50	[0.36–0.70]	0.64	[0.58–0.73]	0.58	[0.54–0.66]
Positive predictive value	0.60	[0.46–0.77]	0.77	[0.67–0.91]	0.89	[0.87–0.93]	0.84	[0.82–0.89]
Negative predictive value	0.44	[0.30–0.62]	0.43	[0.30–0.63]	0.36	[0.31–0.45]	0.38	[0.34–0.46]
(b) Training dataset: Kisubi Hospital
Sensitivity	0.92	[0.90–0.93]	0.80	[0.74–0.83]	0.73	[0.63–0.76]	0.89	[0.87–0.90]
Specificity	0.92	[0.91–0.93]	0.85	[0.79–0.87]	0.95	[0.93–0.96]	0.98	[0.97–0.98]
Positive predictive value	0.72	[0.67–0.74]	0.51	[0.41–0.56]	0.42	[0.30–0.45]	0.85	[0.82–0.86]
Negative predictive value	0.98	[0.98–0.98]	0.95	[0.94–0.96]	0.99	[0.98–0.99]	0.98	[0.98–0.99]