Skip to main content

Table 7 Classification results using logistic regression for Model 1 prediction of extensor spasticity from pendulum test metrics: RI, F1amp, and Plat

From: Predictive value of the pendulum test for assessing knee extensor spasticity

LR terms for Model 1 (Ext1)

Observed Ext1

Predicted Ext1

Predictive value

No spasticity

Any spasticity

aRI

No spasticity

23

22

NPV = .51

Any spasticity

12

74

PPV = .86

Overall

Spec = .66

Sens = .77

CA = 74.0%

bF1amp

No spasticity

24

21

NPV = .53

Any spasticity

14

72

PPV = .84

Overall

Spec = .63

Sens = .77

CA = 73.3%

cPlat

No spasticity

15

30

NPV = .33

Any spasticity

11

75

PPV = .87

Overall

Spec = .58

Sens = .71

CA = 68.7%

dF1amp, Plat

No spasticity

28

17

NPV = .62

Any spasticity

12

74

PPV = .86

Overall

Spec = .70

Sens = .81

CA = 77.9%

  1. aRI: Constant = 5.153; Beta(RI) = −3.646, p < .001
  2. bF1amp: Constant = 4.236; Beta(F1amp) = −.051, p < .001
  3. cPlat: Constant = 3.383; Beta(Plat) = −.049, p < .001
  4. dF1amp, Plat: Constant = 3.258; Beta(F1amp) = −.073, p < .001; Beta(Plat) = .045, p = .082