Table 4. Indirect medical cost, nonmedical cost, and productivity loss*† per Lyme disease (LD) patient in Maryland Eastern Shore, 1997–1998.

Diagnosis group‡	Cohort	No.	Indirect medical cost (US$)§			Nonmedical cost (US$)¶			Productivity loss (US$)#
			Median	Mean	SD**	Median	Mean	SD	Median	Mean	SD
Early-stage LD	1997	20	20	164	428	27	109	219	28	411	1,095
	1998	39	8	307	1,773	8	23	71	49	88	85
Late-stage LD	1997	6	35	579	1,295	22	60	85	273	7,762	17,458
	1998	19	11	389	1,448	37	6,703	22,405	46	9,108	28,284
Suspected LD	1997	22	5	25	49	8	24	37	26	83	164
	1998	32	0	12	22	4	12	17	44	109	197
Tick bite	1997	31	0	37	105	9	155	731	7	73	151
	1998	31	0	11	40	8	17	50	19	66	79
Other	1997	33	0	31	102	11	143	696	28	233	605
	1998	51	0	11	21	4	23	95	19	300	1,539

*Indirect medical costs, nonmedical costs, and productivity losses were acquired from patient questionnaire (1997–1998).
†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.
§Indirect medical costs refer to prescription and nonprescription drug costs patients paid out of pocket.
¶Nonmedical costs are payments made for home/health aides and miscellaneous services, such as transportation and babysitting.
#Productivity losses refer to losses in earning due to illness.
**SD, standard deviation.