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Table 5 Models of percent predicted FEV1 in relation to hormone measurements from sample collected on the same day as the FEV1 measurement was collected a

From: Studying forced expiratory volume at 1 second over menstrual segments in asthmatic and non-asthmatic women: assessing protocol feasibility

 

Independent variable(s)

5 Days before Onset of Menses

 

All women

Beta (s.e.)

  

Term

 

p

1

Ratio (log transformed)

Linear

0.022 (0.018)

0.22

  

Quadratic

−0.001 (0.002)

0.77

2

PDG (log transformed)

Linear

−0.006 (0.011)

0.60

  

Quadratic

−0.007 (0.006)

0.22

3

E1C (log transformed)

Linear

0.654 (0.284)

0.021

  

Quadratic

−0.081 (0.035)

0.021

4

PDG (log transformed)

Linear

−0.020 (0.009)

0.017

  

Quadratic

−0.001 (0.003)

0.80

 

E1C (log transformed)

Linear

0.647 (0.268)

0.016

  

Quadratic

−0.078 (0.033)

0.017

 

No Prior Asthma Diagnosis

   

1

Ratio (log transformed)

Linear

0.021 (0.041)

0.62

  

Quadratic

−0.001 (0.005)

0.84

2

PDG (log transformed)

Linear

−0.017 (0.018)

0.33

  

Quadratic

−0.008 (0.008)

0.28

3

E1C (log transformed)

Linear

1.35 (0.229)

<0.001

  

Quadratic

−0.159 (0.028)

<0.001

4

PDG (log transformed)

Linear

−0.015 (0.017)

0.37

  

Quadratic

0.001 (0.002)

0.65

 

E1C (log transformed)

Linear

1.33 (0.221)

<0.001

  

Quadratic

−0.157 (0.027)

<0.001

 

Prior Asthma Diagnosis

   

1

Ratio (log transformed)

Linear

0.019 (0.032)

0.56

  

Quadratic

−0.007 (0.010)

0.52

2

PDG (log transformed)

Linear

0.030 (0.056)

0.59

  

Quadratic

−0.003 (0.011)

0.75

3

E1C (log transformed)

Linear

0.083 (0.417)

0.84

  

Quadratic

−0.007 (0.057)

0.90

4

PDG (log transformed)

Linear

−0.013 (0.024)

0.58

  

Quadratic

0.001 (0.006)

0.91

 

E1C (log transformed)

Linear

0.075 (0.395)

0.85

  

Quadratic

−0.004 (0.005)

0.94

  1. a. Four models are presented for each time period of hormones: 1) Only the ratio (E1C/PDG) is in the model; 2) only PDG is in the model; 3) only E1C is in the model; and 4) both PDG and E1C are in the model.