Table 3 Temperature-controlled model inferential statistics for ovulation rate and sexual behavior measurements.

From: A multi-site study of the relationship between photoperiod and ovulation rate using Natural Cycles data

 

3-over-6 Ovulation

Coverline Ovulation

LH Test

Ovulation

Natural Cycles Ovulation

Logged Libido

Logged Sex

Covariate

b (SE)

b (SE)

b (SE)

b (SE)

b (SE)

b (SE)

SW

(n = 56,936)

      

Intercept

0.0004 (0.149)

0.0002 (0.094)

−1.18 × 10–7 (0.198)

0.0007 (0.239)

0.669 (0.096)***

0.180 (0.014)***

Age

0.013 (0.003)***

0.006 (0.002)***

−1.34 × 10–6 (0.004)

0.022 (0.005)***

−0.006 (0.002)**

−0.001 (0.0003)***

BMI Proxy

0.009 0.003)**

0.004 (0.002)*

−3.35 × 10–6 (0.004)

0.015 (0.005)**

0.003 (0.002)

0.0003 (0.0003)

Cycle Length

0.016 (0.003)***

0.005 (0.002)*

−1.62 × 10–6 (0.004)

0.022 (0.004)***

−0.005 (0.002)**

−0.001 (0.0002)***

Day Length

0.0002 (0.00006)***

0.0003 (0.00004)***

−1.25 × 10–4 (0.00008)

0.0003 (0.00009)**

−0.00002 (0.00003)

−0.000003 (0.000004)

Temperature

0.004 (0.001)***

0.002 (0.0008)**

−1.04 × 10–5 (0.001)

0.008 (0.002)***

0.001 (0.001)

0.0003 (0.00007)***

United States

(n = 326,137)

      

Intercept

0.0001 (0.064)

0.000003 (0.072)

8.42 × 10–7 (0.087)

0.0003 (0.144)

0.640 (0.040)***

0.242 (0.006)***

Age

0.003 (0.001)***

0.0001 (0.001)

7.95 × 10–5 (0.001)

0.011 (0.003)***

−0.005 (0.001)***

−0.002 (0.0001)***

BMI Proxy

0.002 (0.001)

0.00007 (0.001)

1.64 × 10–5 (0.001)

0.008 (0.003)*

0.003 (0.0008)***

−0.0001 (0.0001)

Cycle Length

0.007 (0.001)***

0.00009 (0.001)

7.01 × 10–5 (0.002)

0.013 (0.002)***

−0.006 (0.0007)***

−0.001 (0.0001)***

Day Length

0.001 (0.00005)***

0.002 (0.00005)***

1.54 × 10–4 (0.00007)*

0.004 (0.0001)***

0.0001 (0.00003)***

0.00001 (0.000004)***

Temperature

−0.0006 (0.0004)

0.0002 (0.0004)

1.21 × 10–5 (0.005)

−0.003 (0.0007)***

−0.001 (0.0002)*

0.000004 (0.00003)

  1. Day Length = number of minutes of ambient day light; BMI = body mass index; *** p ≤ .001; ** p ≤ .01; *p ≤ .05.