Table 2 Overall predictive accuracy comparison: PNN vs. SSNN.

From: Warfarin maintenance dose prediction for Chinese after heart valve replacement by a feedforward neural network with equal stratified sampling

Validation set

Model

MAE (mg/day)

Under-predicted percentage

N (%)

Ideal-predicted percentage

N (%)

Over-predicted percentage

N (%)

MSE (mg/day)

Internal

PNN

0.3250

159 (8.3)

1507 (79.1)

240(12.6)

0.3475

SSNN

0.4341

185 (9.7)

1438 (75.4)

292 (14.9)

0.4230

External

PNN

0.3452

99 (5.2)

1456 (76.4)

351 (18.4)

0.3933

SSNN

0.4108

154 (8.1)

1441 (75.6)

311 (16.3)

0.4085

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