Table 3.

Number and proportion of child evaluation steps correctly performed by HEW with ChARM after 2 mo of routine use, by child age group and breathing status

No.	Consultation step	Observation two (0‐<2 mo) N = 72			Observation two (2‐<12 mo) N = 141			Observation two (12‐59 mo) N = 124			Observation two (fast breathersb) N = 113			Observation two (normal breathersb) N = 222
		n	%	95% CI	n	%	95% CI	n	%	95% CI	n	%	95% CI	n	%	95% CI
1	Correct child positiona	70	97.2	93.4‐1.0	121	85.8	80.1‐91.6	82	66.1	57.8‐74.5	102	90.3	84.8‐95.7	171	77.0	71.5‐82.6
2	Correct device positiona	70	97.2	93.4‐1.0	128	90.8	86.0‐95.6	121	97.6	94.9‐1.0	103	91.2	85.9‐96.4	214	96.4	93.9‐98.8
3	Correct belt positiona	72	100.0	95.0‐1.0	141	100.0	97.4‐1.0	124	100.0	97.1‐1.0	113	100.0	96.8‐1.0	222	100.0	98.4‐1.0
4	Correct age groupb	71	98.6	95.9‐1.0	140	99.3	97.9‐1.0	121	97.6	94.9‐1.0	111	98.2	95.8‐1.0	219	98.6	97.1‐1.0
5	Child calm before ChARM attempta	70	97.2	93.4‐1.0	137	97.2	94.4‐99.9	119	96.0	92.5‐99.4	109	96.5	93.1‐99.9	215	96.8	94.5‐99.1
6	Child not eating/feeding during ChARM attempta	72	100.0	95.0‐1.0	140	99.3	97.9‐1.0	124	100.0	97.1‐1.0	112	99.1	97.4‐1.0	222	100.0	98.4‐1.0
7	Child calm during ChARM attempta	72	100.0	95.0‐1.0	138	97.9	95.5‐1.0	122	98.4	96.2‐1.0	111	98.2	95.8‐1.0	219	98.6	97.1‐1.0
8	Correct classification using ChARM (yes/no?)b	72	100.0	95.0‐1.0	140	99.3	97.9‐1	121	99.2c	97.6‐1.0	112	99.1	97.4‐1.0	221	99.5	98.7‐1.0
1‐8	Correct assessment and classification (steps 1‐8)	66	91.7	85.3‐98.1	108	76.6	69.6‐83.6	76	62.3c	53.7‐70.9	90	79.6	72.2‐87.1	160	72.1	71.1‐82.9

^aBased on two research assistants observing the HEW. Where two research assistants disagreed, least conservative estimate was used.

^bBased on comparison of the age group recorded on the screening checklist and the photograph of the ChARM with result displayed.

^cDenominator = 122 due to two 12‐59 mo children not having RR classification with ChARM.