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

Wegienka, Ganesa; Hasiec, Ewa; Boushey, Homer; Johnson, Christine Cole; Strickler, Ronald; Zoratti, Edward; Havstad, Suzanne

doi:10.1186/1756-0500-5-261

Table 4 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)	Follicular Phase Beta (s.e.)			Luteal Phase Beta (s.e.)
	All women	Term		p	Term		p
1	Ratio (log transformed)	Linear	0.085 (0.043)	0.049	Linear	−0.020 (0.022)	0.37
		Quadratic	−0.008 (0.004)	0.059	Quadratic	0.002 (0.003)	0.49
2	PDG (log transformed)	Linear	−0.001 (0.007)	0.91	Linear	0.008 (0.012)	0.49
		Quadratic	−0.016 (0.005)	0.006	Quadratic	−0.001 (0.004)	0.77
3	E1C (log transformed)	Linear	0.055 (0.120)	0.65	Linear	0.154 (0.130)	0.24
		Quadratic	−0.007 (0.015)	0.65	Quadratic	−0.017 (0.016)	0.28
4	PDG (log transformed)	Linear	−0.016 (0.016)	0.32	Linear	0.006 (0.013)	0.67
		Quadratic	−0.019 (0.006)	0.001	Quadratic	−0.001 (0.004)	0.87
	E1C (log transformed)	Linear	0.122 (0.126)	0.33	Linear	0.109 (0.113)	0.34
		Quadratic	−0.012 (0.015)	0.44	Quadratic	−0.012 (0.014)	0.40
	No Prior Asthma Diagnosis
1	Ratio (log transformed)	Linear	0.161 (0.051)	0.002	Linear	−0.034 (0.037)	0.35
		Quadratic	−0.017 (0.005)	0.001	Quadratic	0.003 (0.006)	0.59
2	PDG (log transformed)	Linear	−0.006 (0.011)	0.55	Linear	0.024 (0.013)	0.07
		Quadratic	−0.024 (0.006)	<0.001	Quadratic	−0.004 (0.005)	0.38
3	E1C (log transformed)	Linear	0.251 (0.130)	0.055	Linear	0.344 (0.189)	0.06
		Quadratic	−0.034 (0.016)	0.036	Quadratic	−0.039 (0.023)	0.08
4	PDG (log transformed)	Linear	−0.021 (0.019)	0.29	Linear	0.019 (0.014)	0.18
		Quadratic	−0.025 (0.006)	<0.001	Quadratic	−0.003 (0.004)	0.49
	E1C (log transformed)	Linear	0.270 (0.094)	0.004	Linear	0.198 (0.160)	0.22
		Quadratic	−0.031 (0.011)	0.006	Quadratic	−0.023 (0.020)	0.24
	Prior Asthma Diagnosis
1	Ratio (log transformed)	Linear	−0.023 (0.029)	0.43	Linear	−0.013 (0.017)	0.43
		Quadratic	0.004 (0.004)	0.36	Quadratic	0.003 (0.003)	0.21
2	PDG (log transformed)	Linear	0.004 (0.012)	0.74	Linear	−0.013 (0.010)	0.19
		Quadratic	−0.006 (0.006)	0.37	Quadratic	0.005 (0.003)	0.17
3	E1C (log transformed)	Linear	−0.092 (0.133)	0.49	Linear	−0.096 (0.097)	0.32
		Quadratic	0.013 (0.016)	0.40	Quadratic	0.014 (0.011)	0.20
4	PDG (log transformed)	Linear	−0.005 (0.019)	0.81	Linear	−0.014 (0.012)	0.25
		Quadratic	−0.008 (0.008)	0.35	Quadratic	0.004 (0.004)	0.30
	E1C (log transformed)	Linear	−0.059 (0.157)	0.71	Linear	0.010 (0.022)	0.64
		Quadratic	0.010 (0.018)	0.58	Quadratic	0.002 (0.003)	0.58

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.

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