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Percentages of sexually active adolescent girls and boys per age group. | Download Scientific Diagram
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Mean intercourse frequency by age group Bars represent standard deviation. | Download Scientific Diagram
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Sex, health, and years of sexually active life gained due to good health: evidence from two US population based cross sectional surveys of ageing | The BMJ
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Chart 1 Percentage physically active in leisure-time, by age group and sex, household population aged 12 and older, Canada, 2005
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