[us16] Original data was provided in intervals for ages 80-84, the lowest value (80) was chosen for this group. Topcoded at age 85.
[us16] Scope limitation: only asked to those aged 15 or over.
[us16] Disabled refers to persons who have a disability which prevents work or which limits the kind or amount of work.
[us16] Immigrant refers to persons whose citizenship or country of birth is not the same as the country they live in or who report a year of arrival to U.S.
[us16] Hispanic denotes the following: Mexican, Mexican-American, Chicano, Puerto Rican, Cuban, Cuban American, or some other Spanish, Hispanic, or Latino group.
[us16] Original data provided in intervals; values given are the lowest value of the interval.
[us16] Definitional deviation: for persons aged 54 and above, enrollment is defined based on the reason why not working or not looking for work.
[us16] Scope limitation: only asked to those aged 15 and above.
[us16] Scope limitation: available only for persons aged 15 years old and over.
[us16] Mixed categories: primary and lower secondary levels include also persons attended but did not complete the final year.
[us16] The hourly wage was calculated from the annual one using information on weeks and hours worked.
[us16] Payments were reported in annual amounts which have been converted to monthly amounts.
[us16]  Definitional deviation: based on national classification 2010 Occupation Census Code (based on 2010 SOC).
[us16] Mixed categories: hunting and trapping are included in code 2 (fishing) while they should be in code 1 (agriculture, hunting and forestry).
[us16] US 2012 Census Code based on North American Industry Classification System (NAICS) 2012.
[us16] Mixed categories: Code 240 (contributing family worker) includes all unpaid workers.
[us16] Definitional deviation: variable refers to part-time in all jobs.
[us16] Topcoded at 99 hours.
[us16] Refers to main activity status in income reference period.