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Volume 12, Number 4—April 2006
Research

Economic Impact of Lyme Disease

Xinzhi Zhang*Comments to Author , Martin I. Meltzer*, César A. Peña†1, Annette B. Hopkins†, Lane Wroth‡, and Alan D. Fix†
Author affiliations: *Centers for Disease Control and Prevention, Atlanta, Georgia, USA; †University of Maryland, Baltimore, Maryland, USA; ‡Care First-Easton Branch (previously Delmarva Health Plan), Easton, Maryland, USA

Main Article

Table 3

Summary of direct medical cost*† per Lyme disease (LD) patient in Maryland Eastern Shore, 1997–2000

Diagnosis group‡ Cohort No. cases Cost per case (US$)
 Significance§
Median Mean Minimum Maximum SD 1997 1998 1999 2000
Early-stage LD 1997 77 565 1,609 95 11,286 2,010 NA
1998 63 337 869 78 9,720 1,542 S NA
1999 122 282 455 42 3,574 630 S NS NA
2000 72 288 464 5 5,338 738 S NS NS NA
Late-stage LD 1997 28 3,673 4,240 275 24,985 5,132 NA
1998 24 654 1,472 125 6,417 1,839 S NA
1999 59 588 1,286 74 5,402 1,334 S NS NA
2000 45 589 1,380 45 6,918 1,652 S NS NS NA
Suspected LD 1997 153 169 326 45 9,564 948 NA
1998 79 174 255 48 2,285 281 NS NA
1999 242 198 321 51 3,869 445 NS NS NA
2000 244 238 361 42 7,816 601 NS NS NS NA
Tick bite 1997 143 92 140 33 836 129 NA
1998 55 93 227 34 3,432 502 S NA
1999 202 87 120 17 527 98 NS S NA
2000 139 70 121 16 1,181 141 NS S NS NA
Other 1997 490 196 319 8 6,236 495 NA
1998 154 273 479 34 3,721 561 S NA
1999 573 215 321 36 5,091 435 NS S NA
2000 451 256 381 17 4,157 452 NS NS NS NA

*Direct medical costs were collected from medical record abstraction (1997–2000). Direct medical costs of LD included costs of physician visits, consultation, serologic testing, procedure, therapy, hospitalization/ER, and other relevant costs.
†All costs were converted to 2000 equivalent.
‡Patients were divided into 5 diagnosis groups: clinically defined early-stage LD, clinically defined late-stage LD, suspected LD, tick bite, and other related complaints.
§Differences between annual mean direct medical costs were analyzed by using 1-way analysis of variance followed by Bonferroni test; p<0.05; SD, standard deviation; NA, not available; S, significant; NS, not significant.

Main Article

1Current affiliation: Maryland Department of Health and Mental Hygiene, Baltimore, Maryland, USA

Page created: January 19, 2012
Page updated: January 19, 2012
Page reviewed: January 19, 2012
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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