Table 2.

Clinical complication of measles cases within and outside outbreaks according to clinical and laboratory definition^*

	Overall		Within outbreak		P value†	Overall		Within outbreak		P value‡
	Clinical definition (N = 105)		Clinical definition (N = 97)			Laboratory definition (IgM +)			Laboratory definition (IgM +)
	n	%	n	%		n	%	n	%
Fever	88	84	82	84	0.5	36	49	33	79	0.4
Cough	102	97	94	97	0.6	46	62	41	98	0.7
Diarrhea	38	36	35	36	0.9	22	30	20	48	0.7
Increased respiratory rate	26	25	23	24	0.4	9	12	8	19	0.9
Difficulty in breathing	18	17	13	13	< 0.001	7	10	5	12	0.09
Vomiting	20	19	20	20	0.3	13	18	13	31	0.1
No stimulus response	23	22	23	23	0.1	3	4	3	7	0.5

^*IgM = immunoglobulin M.

^†Comparison of clinical presentation within and outside outbreak by clinical definition.

^‡Comparison of clinical presentation within and outside outbreak by IgM laboratory.