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Figure 1 | Breast Cancer Research

Figure 1

From: A migrant study of pubertal timing and tempo in British-Bangladeshi girls at varying risk for breast cancer

Figure 1

Theoretical model of sexual development. The model above distinguishes adrenarche from pubarche and marks adrenarche as the first change to occur during juvenile development. A child could then progress from adrenarche to menarche, synchronously or asynchronously, through either the pubarche or thelarche pathway. The timing of each milestone is equivalent to the age of onset, whereas, the tempo is determined by the interval of time between consecutive milestones.

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