After prying into the sex lives of Spaniards, a team of researchers have concluded that richer people -- particularly women -- report higher rates of satisfaction in the bedroom.
Overall, it appears that Spaniards are happy with the quality and quantity of their time in the bedroom: a whopping 90 per cent of men and women said they were either quite or very satisfied with their sex lives in general.
But after digging through 9,850 interviews taken from the country's first national sex survey in 2009, researchers from the Barcelona Public Health Agency also found a correlation between socioeconomic status and sexual satisfaction, particularly notable among female respondents.
"People of a lower socioeconomic status claim to be less satisfied sexually, which especially applies to women, who seem to be more influenced by these factors," explained lead author Dolores Ruiz in a statement released on Wednesday.
Conversely, the study, published in the Annals of Epidemiology, noted that those who were more well-off seemed to have a “better awareness of their own needs and a greater capacity for developing their sexuality in a way which is satisfying for them."
Researchers also found a link between those with a higher socioeconomic status and the use of contraception.
The World Health Organisation defines sexual health as a state of physical, emotional, mental and social well-being when it comes to sexuality -- above and beyond the absence of disease and dysfunction.
Respondents likewise reported higher satisfaction when they had a stable partner (97 percent of men, 96 percent of women) versus a casual partner and a series of hook-ups (88 percent men, 80 percent women).
Meanwhile, another study published this spring out of the University of Colorado Boulder found that people reported higher levels of sexual satisfaction when they believed they were clocking in more nookie time than their peers.
Said lead author Tim Wadsworth: "Having more sex makes us happy, but thinking that we are having more sex than other people makes us even happier."