Table 3.

Number and percentage of partial or full answers found to questions sent to only one of the two databases, by subject (N = 1125)

Subject	PubMed	UpToDate	χ21*	P
	n/N (%)	n/N (%)
Diagnosis	38/51 (75)	339/400 (85)	3.46	.06
Etiology	38/70 (54)	175/219 (80)	17.97	< .001
Prognosis	2/3 (67)	7/8 (88)	0.01	.94
Therapy	24/41 (59)	117/143 (82)	9.64	.002
Complications and side effects	22/31 (71)	37/45 (82)	1.34	.25
Other†	28/46 (61)	54/68 (79)	4.67	.03

^*Chi-square of difference between PubMed and UpToDate in partial and full answers found.

^†Mechanism, unclear, and overview/review combined.