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Factors and variability

In women, the most common way to achieve orgasm is by direct sexual stimulation of the clitoris (meaning consistent digital, oral, or other concentrated friction against the external parts of the clitoris). General statistics indicate that 70–80 percent of women require direct clitoral stimulation to achieve orgasm, although indirect clitoral stimulation (for example, via vaginal penetration) may also be sufficient. The Mayo Clinic stated, "Orgasms vary in intensity, and women vary in the frequency of their orgasms and the amount of stimulation necessary to trigger an orgasm." Clitoral orgasms are easier to achieve because the glans of the clitoris, or clitoris as a whole, has more than 8,000 sensory nerve endings, which is as many (or more in some cases) nerve endings as are present in the human penis or glans penis. As the clitoris is homologous to the penis, it is the equivalent in its capacity to receive sexual stimulation.