Journal of Environmental and Public Health

Clinical Study

Legionella Antibodies in a Danish Hospital Staff with Known Occupational Exposure

Table 1

Univariate analysis of self-reported health and risk factors in the staff with antibodies to Legionella pneumophila at a specialised hospital in Denmark, 2005. Variables with in any of the two groups are included


	Titre 1 : 128			Titre 1 : 128 of L. pneumophila sg 1			Reference 1 : 128
	(n=116)			(n=41)			(n=142)
	No. ()	OR	P	No. ()	OR	P	No. ()
	(yes/no)	(95 CI)			(95 CI)

Health

Illness the previous year Absence from work due to infection in days Pneumonia during 5 years	84/115 (73)	1.58	0.090	30/41 (73)	1.58	0.238	89/141 (63)
		(0.93-2.70)			(0.73-3.40)
	70/89 (79)	1.79	0.079	27/35 (77)	1.61	0.281	68/101 (67)
		(0.93-3.44)			(0.66-3.94)
	10/114 (9)	0.57	0.164	7/40 (18)	1.27	0.621	20/139 (14)
		(0.26-1.28)			(0.50-3.27)
GP visit	48/115 (42)	0.75	0.252	25/41 (61)	1.61	0.186	68/139 (49)
		(0.45-1.23)			(0.79-3.27)
Influenza	38/116 (33)	1.67	0.72	13/41 (32)	1.60	0.237	31/137 (23)
		(0.95-2.91)			(0.74-3.46)
Stomach ache	23/87 (26)	0.70	0.268	6/33 (18)	0.44	0.084	31/91 (34)
		(0.37-1.32)			(0.16-1.17)
Headache	32/87 (37)	0.66	0.177	12/33 (36)	0.66	0.323	43/92 (47)
		(0.36-1.21)			(0.29-1.51)
Myalgia	18/87 (21)	0.62	0.167	7/33 (21)	0.65	0.359	27/91 (30)
		(0.31-1.23)			(0.25-1.67)
Common cold	64/87 (74)	1.82	0.062	26/33 (79)	2.39	0.056	55/91 (60)
		(0.97-3.44)			(0.94-6.08)
Other symptoms	5/86 (6)	0.34	0.036	4/32 (13)	0.80	0.703	14/91 (15)
		(0.12-0.99)			(0.24-2.62)

Risk factors

Hot water tank	49/103 (48)	1.27	0.376	22/37 (59)	2.08	0.053	50/121 (41)
		(0.75-2.16)			(0.86-4.41)
Showering elsewhere than home	58/116 (50)	1.41	0.170	21/41 (51)	1.46	0.288	58/140 (41)
		(0.86-2.32)			(0.73-2.93)
Travel abroad	81/116 (70)	0.66	0.154	29/41 (71)	0.69	0.354	108/139 (78)
		(0.38-1.17)			(0.31-1.50)
Hotel stay in Denmark	43/116 (37)	0.75	0.262	12/41 (29)	0.52	0.079	62/141(44)
		(0.50-1.24)			(0.25-1.10)
Air-condition in private car	61/114 (54)	1.69	0.040	22/41 (54)	1.72	0.130	56/138 (41)
		(1.02-2.78)			(0.85-3.46)
Job skills less-/ more than 3 years job education	22/100 (22)	1.75	0.067	10/37 (27)	1.32	0.505	40/121 (33)
		(0.96-3.21)			(0.58-2.98)
Current smoking	22/116 (19)	1.34	0.385	9/41(22)	1.62	0.289	21/142 (15)
		(0.69-2.58)			(0.68-3.88)
Male/female	14/116 (12)	1.39	0.347	6/41 (15)	1.02	0.967	21/141 (15)
		(0.69-2.79)			(0.38-2.73)
Age (continuous per year)	—	0.97	0.006	—	0.98	0.258	—
		(0.94-0.99)			(0.95-1.01)