Table 2. Average monthly prevalence of pyoderma and scabies, EAHSP, September 2004–August 2007.

	Sep04–Feb06 (18 months) % (95%CI)	Mar06–Aug07 (18 months) % (95%CI)	Absolute difference % (95%CI)	p
Pyoderma
All ages	46.0 (44.1,48.0)	27.5 (26.0,29.0)	−18.5 (−21.0,−16.1)	<0.001
Aged <3 yrs	41.7 (37.7,45.8)	30.0 (26.4,33.6)	−11.8 (−17.2,−6.3)	<0.001
Aged 3-<9 yrs	51.1 (48.4,53.9)	31.6 (29.4,33.8)	−19.5 (−23.1,−16.0)	<0.001
Aged 9–14 yrs incl	41.3 (37.9,44.7)	19.7 (17.4,22.1)	−21.6 (−25.7,−17.5)	<0.001
Additional data *
Upper body pyoderma *	22.7 (19.8,25.6)	13.5 (11.4,15.6)	−9.2 (−12.8,−5.7)	<0.001
Lower body pyoderma *	44.1 (40.7,47.5)	30.4 (27.6,33.2)	−13.7 (−18.1,−9.3)	<0.001
Upper body 5 or more sores	5.2 (3.6,6.7)	4.0 (2.8,5.2)	−1.2 (−3.2,0.7)	0.2
Lower body 5 or more sores	17.8 (15.1,20.5)	11.5 (9.5,13.5)	6.3 (−9.6,−2.9)	<0.001
5 or more sores *	19.9 (17.2,22.7)	12.6 (10.6,14.7)	−7.3 (−3.9,−10.8)	<0.001
Treatment for those with 5+ sores *	3.8 (−0.4, 7.9)	17.2 (8.0,26.4)	13.4 (3.3,23.6)	0.007
Crusted/purulent pyoderma *	31.6 (28.4,35.8)	21.6 (19.0,24.1)	−10.0 (−14.1,−6.0)	<0.001
Treatment for crusted/purulent pyoderma *	3.9 (1.5,6.2)	7.3 (3.9,10.8)	3.5 (−0.7,7.6)	0.1
Scabies
All ages	14.3 (13.0,15.7)	12.7 (11.6,13.8)	−1.7 (−3.4,0.1)	0.06
Aged <3 yrs	22.6 (19.2,26.0)	22.8 (19.5,26.1)	0.2 (−4.5,5.0)	0.9
Aged 3-<9 yrs	13.7 (11.8,15.7)	13.0 (11.4,14.6)	−0.7 (−3.2,1.8)	0.6
Aged 9–14 yrs incl	9.4 (7.4,11.4)	6.3 (4.9,7.8)	−3.1 (−5.5,−0.6)	0.01
Additional data *
Infected scabies*	3.7 (2.4,4.9)	1.5 (0.7,2.2)	−2.2 (−3.7,−0.7)	0.003

Notes: “Absolute difference” refers to the difference in the average monthly prevalence in the first 18 months (Sep04–Feb06) compared to the second 18 months (Mar06–Aug07).

*: indicates parameters for which comparable data were sought on 2001 children seen during school screening (age 3–14 years).