Cockroach Infestation and Factors Affecting the Estimation of Cockroach Population in Urban Communities

Table 4

Frequency of resident’s responses to four items of questionnaire.

Type of location	Sampling units*	Frequency of old ancient	Pointed out to infestation of their units	Encountered German cockroach size (≤1.5 cm)	Pointed out to infestation initiated from more than 6 months ago
Dormitories	228	0	(153/228) 67%	(107/149) 72%	(80/150) 53%
Private houses	97	55 (57%)	(78/97) 80%	(45/77) 58%	(52/75) 69%
Housing complex	23	0	(20/23) 87%	(10/18) 56%	(11/18) 61%
Total	348	55 (16%)	(251/348) 72%	(162/245) 66%	(143/243) 59%

∗Unit or houses.