Table 2.

Association of occupational characteristics with frequency of sexual intercourse over follow-up in the LIFE Study, 2005–2009 (n=469 couples).

Occupational Characteristics	Number of Couples	% Difference in Frequency of Sexual Intercourse (95% CI)1
Female Paid Employment
Employed	372	REF
Not Employed	97	−11.5 (−22.1, 0.6)
Male Paid Employment
Employed	454	REF
Not Employed	15	−8.5 (−31.4, 21.9)
Female Night Work2
No night work	340	REF
Night work	32	−8.5 (−24.5, 11.0)
Male Night Work
No night work	351	REF
Night work	103	−8.2 (−19.0, 4.1)
Female Rotating Shifts
No rotating shifts	339	REF
Rotating shifts	33	−23.1 (−36.4, −6.9)
Male Rotating Shifts
No rotating shifts	396	REF
Rotating shifts	83	−12.2 (−23.9, 1.4)
Couple Rotating Shift Work
Neither partner works rotating shifts	283	REF
Male works rotating shifts, not female	46	−8.5 (−22.5, 8.1)
Female works rotating shifts, not male	22	−10.0 (−28.5, 13.3)
Both partners work rotating shifts	10	−39.1 (−61.0, −5.0)
Female Heavy Exertion or Lifting
No heavy exertion or lifting	327	REF
Heavy exertion or lifting	45	−5.6 (−20.1, 11.6)
Male Heavy Exertion or Lifting
No heavy exertion or lifting	304	REF
Heavy exertion or lifting	150	−0.6 (−11.4, 11.4)
Female Prolonged Standing
No prolonged standing	292	REF
Prolonged standing	80	−8.5 (−19.8, 4.4)
Male Prolonged Sitting
No prolonged sitting	237	REF
Prolonged sitting	217	1.0 (−9.1, 12.3)

¹Generalized linear mixed models with Poisson distribution and log link were used to estimate the % difference (95% CI) adjusting for female age (years), education level (high school or less, some college, college graduate), and regular exercise (yes, no), the difference between couple’s ages (years), and male employment (yes, no).

²Models for specific occupational characteristics were restricted to employed men, women, or couples.