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Table 9 The thresholds corresponding to the first four Principal Components

From: Data mining of audiology patient records: factors influencing the choice of hearing aid type

Principal Component (PC)

Frequency (in Hz)

 

250

500

1000

2000

4000

8000

PC1: Flat hearing loss

42

41

40

39

42

44

 

45

45

42

42

45

 

PC2: High tone sensorineural loss

37

38

48

69

82

79

 

46

46

55

76

89

 

PC3: Air-bone gap (flat)

78

77

75

71

75

76

 

31

35

42

45

47

 

PC4: Air-bone gap (predominant at low tone)

50

59

76

76

50

32

 

29

55

82

85

52