. 2011 Feb 23;6(2):e16942. doi: 10.1371/journal.pone.0016942

Table 1. Number of participants randomized and number responding by the time of the 2^nd reminder for each trial and for each of the intervention arms.

		Intervention arm
Trial		Non-tracked	Tracked	Monday	Friday
Family Medicine survey	# randomized	228	228	228	228
	# responding	115	106	93	128
	% responding	50.4	46.5	40.8	56.1
Internal Medicine survey	# randomized	191	192	192	191
	# responding	79	71	79	69
	% responding	41.4	37	41.1	36.1
Practicing physicians survey	# randomized	n/a	n/a	250	250
	# responding	n/a	n/a	122	125
	% responding	n/a	n/a	48.8	50

Table 1. Number of participants randomized and number responding by the time of the 2nd reminder for each trial and for each of the intervention arms.