Enterobius vermicularis infection among population of General Mansilla, Argentina

Table 1 Sociocultural and environmental factors studied in 70 E. vermicularis infected and non-infected families in General Mansilla, Province of Buenos Aires, Argentina (n, %)

Variable		PF (n = 40)	FN (n = 30)	P
Habitat	Urban	29 (72.5)	21 (70)	0.8188
	Rural	11 (27.5)	9 (30)
Water supply	Water pump	12 (30)	13 (43.33)	0.2493
	Running water	28 (70)	17 (56.66)
Disposal of waste	Sewer	14 (35)	8 (26.66)	0.4573
	No sewer	26 (65)	22 (73.33)
1Housing	Satisfactory	30 (75)	20 (66.66)	0.4450
	Unsatisfactory	10 (25)	10 (33.33)
Garbage	Collected	28 (70)	21 (70)	1.0000
	Not collected	12 (30)	9 (30)
Bathroom	Existent	25 (62.5)	22 (73.33)	0.3396
	Non-existent	15 (37.5)	8 (26.66)
2Overcrowding	Yes	17 (42.5)	9 (30)	0.2841
	No	23 (57.5)	21 (60)

PF: Families with some member infected with E. vermicularis; NF: Families with no member infected with E. vermicularis.

¹Satisfactory housing: With cement floors and masonry walls; unsatisfactory housing: Dirt floors and wood or metal walls.

²Overcrowding: Yes: when more than three people sleep in a room; No: When less than three people sleep in a room.

Table 2 Logistic regression models for the presence of E. vermicularis in 309 (88 rural and 221 urban) individuals, both individually and grouped into 70 families in General Mansilla, Argentina

Variable	Risk category	Coefficient	Odds Ratio
For the total of individuals, n = 309
Affiliation	Son/daughter	1.267	3.550
Housing	Satisfactory	0.829	2.288
Garbage	Not collected	1.372	3.944
Water	Running	0.951	2.591
Abdominal pain	Present	0.555	1.742
Sleeping disorders	Present	0.561	1.752
Constant	-1.825
For rural individuals, n = 88
Affiliation	Son/daughter	10.246	28 167
Housing	Satisfactory	2.857	17.5
Age (yr)	Eldest son/daughter	0.316	1.372
Bathroom	Non-existent	2.160	8.670
Sleeping disorders	Present	1.967	7.151
Constant	-12.493
For urban individuals, n = 221
Affiliation	Son/daughter	1.176	3.241
Housing	Satisfactory	0.917	2.5
Water	Running	1.372	3.937
Abdominal pain	Present	0.690	1.993
Constant	-1.612
For positive families, n = 40
Housing	Satisfactory	2.749	15.625
Water	Running	2.614	13.699
Garbage	Not collected	2.75	15.636
Bathroom	Non-existent	2.403	11.056
Constant	0.338