Mean age at marriage, male shows the average length of single life expressed in years among those males who marry before age 50. It is a synthetic indicator calculated from marital status categories of men and women aged 15 to 54 at the census or survey date. Limitations and exceptions: The estimates by age may be affected by age misreporting. Marital status may be misreported, particularly in societies where divorce or separation is not socially acceptable. The differences in marital status categories included over time and their definitions limit comparability of data across time and countries. Data derived from surveys with small samples are subject to sampling error.