Table 2 Linear and quadratic relationships between hormone levels and psychological variables
From: The effect of reproductive hormones on women’s daily smoking across the menstrual cycle
Number of cigarettes | Need for cigarettes | Enjoyment of cigarettes | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Fixed effect β | SE | df | p value | Fixed effect β | SE | df | p value | Fixed effect β | SE | df | p value | |
Linear models | ||||||||||||
Intercept | 7.65 | 6.2×10-1 | 19.9 | <.001 | −3.59 | 1.4×10-1 | 19.87 | <.001 | 3.44 | 2.1×10-1 | 19.87 | <.001 |
PdG linear | 3.4×10-5 | 5.9×10-5 | 189.2 | .559 | 1.4×10-5 | 1.1×10-5 | 189.1 | .201 | 9.3×10-6 | 1.0×10-5 | 188.9 | .361 |
E1G linear | 2.6×10-6 | 4.6×10-6 | 191.2 | .580 | −2.5×10-6 | 8.6×10-7 | 190.5 | .005 | −2.3×10-6 | 8.0×10-7 | 189.4 | .005 |
PdG×E1G | −1.3×10-9 | 1.7×10-9 | 197.2 | .444 | −4.7×10-10 | 3.1×10-10 | 194.8 | .133 | −4.9×10-10 | 2.9×10-10 | 191.2 | .091 |
Quadratic models | ||||||||||||
Intercept | 7.53 | 5.9×10-1 | 19.8 | <.001 | 3.59 | 1.4×10-1 | 20.0 | <.001 | 3.43 | 2.1×10-1 | 19.9 | <.001 |
PdG linear | −2.3×10-4 | 1.1×10-4 | 190.2 | .039 | −2.2×10-5 | 2.1×10-5 | 181.1 | .310 | −2.4×10-6 | 2.0×10-5 | 187.8 | .902 |
PdG quadratic | 1.2×10-8 | 4.1×10-9 | 192.4 | .003 | −3.0×10-10 | 7.8×10-10 | 190.6 | .720 | 4.1×10-10 | 7.3×10-10 | 188.4 | .902 |
E1G linear | −2.8×10-6 | 6.7×10-6 | 191.8 | .676 | −2.8×10-6 | 1.3×10-6 | 190.3 | .031 | −3.2×10-6 | 1.2×10-6 | 188.3 | .007 |
E1G quadratic | 1.8×10-11 | 2.1×10-11 | 201.6 | .391 | 1.5×10-12 | 4.1×10-12 | 197.3 | .713 | 3.9×10-12 | 3.8×10-12 | 191.5 | .304 |
PdG×E1G | −3.9×10-9 | 2.0×10-9 | 194.3 | .052 | −3.7×10-10 | 3.8×10-10 | 191.9 | .328 | −5.1×10-10 | 3.5×10-10 | 189.0 | .146 |