Table 2. The average gain in number of days for each delivery method for cases where one record arrived before the other.

	Clinic	N	Minimum gain	Maximum gain
Paper	1	51	0	0
	2	109	0	0
	3	51	0	0
	4	109	0	4
	5	199	0	8
	6	446	0	2
	Total	965	0	8
SMS	1	51	21	29
	2	109	21	29
	3	51	21	26
	4	100	0	3
	5	199	0	4
	6	522	0	10
	Total	1032	0	29