Characteristics of participants included in the study (n = 1,308), and excluded due to missing data (n = 473).

<p>IQR – interquartile range. SD – standard deviation.</p><p>For continuous variables the difference between the means of those included and excluded from the analysis was tested using an unpaired t-test.</p><p>For categorical variables the difference between those included and excluded from the analysis was tested using Pearson’s chi-squared test.</p>*<p>For non-normally distributed variables, differences between medians of those included and excluded from the analysis were tested using a Mann-Whitney U-test.</p>**<p>Excluded participants are those that were eligible for inclusion in our study (i.e. they attended the 15 year and had data on AMH), but who were missing data for cardiometabolic outcomes and/or potential confounders.</p>***<p>The ‘N with available data’ for the excluded participant’s column relates to the number of excluded participants that had data for each of the variables included in our analysis. Thus, the means, medians and percentages reported for the excluded participants are based only on those that had data available for each variable.</p>****<p>The highest pubertal stage was established by taking the highest Tanner rating for either breast development or pubic hair. If there were missing data for breast development, pubic hair ratings were used where available and vice versa