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Table 4 Characteristic values, contribution rate and accumulated contribution rate of PCA

From: Development of a particle swarm optimization-backpropagation artificial neural network model and effects of age and gender on pharmacokinetics study of omeprazole enteric-coated tablets in Chinese population

Variable

Characteristic value

Contribution rate

Accumulated contribution rate

 × 1

3.693

30.774

30.774

 × 2

2.252

18.771

49.545

 × 3

1.220

10.165

59.710

 × 4

1.184

9.869

69.579

 × 5

1.000

8.333

77.912

 × 6

0.869

7.242

85.154

 × 7

0.659

5.494

90.648

 × 8

0.354

2.946

93.594

 × 9

0.281

2.341

95.935

 × 10

0.242

2.018

97.952

 × 11

0.155

1.296

99.248

 × 12

0.090

0.752

100.000