Volume 11 — March 27, 2014
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ERRATUM
Erratum, Vol. 10, June 6 Release
Suggested citation for this article: Erratum, Vol. 10, June 6 Release. Prev Chronic Dis 2014;11:120265e. DOI: http://dx.doi.org/10.5888/pcd11.120265e.
In the article “Using Geographic Information Systems to Compare Municipal, County, and Commercial Parks Data,” the author made inadvertent errors in several calculations as a result of overlapping park shape files that were not accounted for in the analysis. This erratum provides corrected results that account for the overlap. The corrections were made to our website on March 27, 2014, and corrected article appears online at http://www.cdc.gov/pcd/issues/2013/12_0265.htm. The authors regret any confusion or inconvenience these errors may have caused.
The following corrections have been made to the article:
Results (Abstract)
Commercial parks data did not include 30.5% (116/380, 20.2 sq mi) of North Carolina, 42.9% (187/436, 21.3 sq mi) of Maryland, and 71.7% (629/881, 12.7 sq mi) of New York parks that we found and verified from municipal/county sources. Municipal/county data did not include 15.8% (60/380, 10.1 sq mi) of North Carolina parks, 27.5% (120/436, 74.8) of Maryland parks, and 9.1% (80/881, 7.8 sq mi) of New York parks that we found and verified from commercial sources.
Results
Overall, we verified the existence of 380 parks in the NC study area, 436 parks in the Maryland study area, and 881 parks in the New York study area (Table 1). The commercial data source did not include the following percentage of parks found and verified in municipal/county sources: 30.5% (116/380, 20.2 sq mi) in North Carolina, 42.9% (187/436, 21.3 sq mi) in Maryland, and 71.7% (629/881, 12.7 sq mi) in New York. The municipal/county data sources did not include the following parks found and verified in the commercial source: 15.8% (60/380, 10.1 sq mi) in North Carolina, 27.5% (120/436, 74.8 sq mi) in Maryland, and 9.1% (80/881, 7.8 sq mi) in New York. Municipal/county data sources showed higher percentages of land area with parks for North Carolina and New York than did the commercial data sources but a lower percentage for Maryland.
Tables
Table 1. Comparison of Parks Data Obtained From Municipal/County Sources with Data Obtained from Commercial Sources in 3 Locations: North Carolina, Maryland, and New York, 2009–2012
Park Details North Carolinaa, n = 380b Marylandc, n = 436b New Yorkd, n = 881b Municipal/ Countye Commercialf Municipal/ Countye Commercialf Municipal/ Countye Commercialf Number of parks Number of parks, total 320 261 316 246 801 251 Parks in both data sourcesg 204 201 129 126 172 171 Parks in municipal/county data but not in commercial data 116 NA 187 NA 629 NA Parks in commercial data but not in municipal/county datah NA 60 NA 120 NA 80 Park area (sq mi) Park area, total 42.7 32.5 67.2 120.7 29.5 24.7 Park area spatially overlaidi 22.5 22.5 45.9 45.9 16.9 16.9 Park area in municipal/county data but not in commercial data 20.2 NA 21.3 NA 12.7 NA Park area in commercial data but not in municipal/county data NA 10.1 NA 74.8 NA 7.8 Percentage of study area in parks 2.3 1.8 5.0 8.9 11.4 9.5
Table 3. Park Facilities Missed by Relying on 1 Data Source, by Study Areaa
Parks with Each Facility Park Facilities Missed if Relying on Municipal/County Data Onlyb Park Facilities Missed if Relying on Commercial Data Onlyb North Carolina (n = 32) na (%) Maryland (n = 65) na (%) New York (n = 49) na (%) North Carolina (n = 116) na (%) Maryland (n = 187) na (%) New York (n = 629) na (%) Outdoors Baseball or softball fields 12 (37.5) 30 (46.2) 13 (26.0) 34 (29.3) 72 (38.9) 104 (16.5) Basketball hoops 5 (15.6) 26 (40.0) 17 (34.0) 25 (21.6) 84 (44.9) 383 (60.9) Bocce ball courts 0 0 1 (2.0) 0 1 (0.5) 14 (2.2) Cricket fields 0 0 0 0 0 2 (0.3) General purpose fields 2 (6.3) 23 (35.4) 5 (10.0) 7 (6.0) 60 (32.1) 19 (3.0) Golf holes 1 (3.1) 0 1 (2.0) 7 (6.0) 3 (1.6) 4 (0.6) Football fields 0 1 (1.5) 1 (2.0) 3 (2.6) 0 14 (2.2) Skate park 0 1 (1.5) 1 (2.0) 4 (3.4) 2 (1.1) 5 (0.8) Soccer fields 1 (3.1) 0 (0.0) 0 11 (9.5) 2 (1.1) 13 (2.1) Swimming pools 3 (9.4) 2 (3.1) 2 (4.0) 7 (6.0) 9 (4.8) 23 (3.7) Tennis courts 7 (21.9) 14 (21.5) 4 (8.0) 17 (14.7) 32 (17.1) 33 (5.2) Tracks 0 0 1 (2.0) 0 0 12 (1.9) Volleyball courts 9.4 4 (6.2) 0 9 (7.8) 9 (4.8) 32 (5.1) Outdoors or indoors Racquetball, handball, or squash courts 1 (3.1) 0 5 (10.0) 0 1 (0.5) 387 (61.5) Indoors General purpose fields 0 0 1 (2.0) 0 2 (1.1) 0 Swimming pools 1 (3.1) 0 0 0 0 7 (1.1)
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