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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.