|Unlimited License Mariners||Unlicensed Mariners||Total Mariners|
|Final eligible sample||1,787||3,464||5,270|
|Survey Response Rate||63%||33%||43%|
|Breakdown of Nonrespondents|
|Locatedrefused to participate||71||256||327|
|Locatedagreed but did not return survey||52||134||186|
|Locatedon a ship and could not complete survey||94||267||361|
|Locateddisabled and unable to complete||2||28||30|
|No contact (wrong address/phone or no return)||444||1,648||2,092|
|Total percent located (completions/deceased/located)||75%||53%||60%|
1 Rates are calculated as follows: completed interviews [(completed interviews + partial interviews) + (refusals + non-contacts + other) + e], where e is an estimate of the proportion of unknown outcomes that are eligible. e was calculated based on the number of returns or phone calls that indicated a sample member was deceased (0.5% of the total sample).
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics and Maritime Administration, 2002 Mariner Survey, Principal Findings, Washington, DC.