Table 5.

Probability of finding a tracer medicine in a sample outlet, by rural and urban location and manufacturing origin, 2006 and 2009 (40 medicines)

Location	2006		2009
	Manufactured in Tanzania and imported (20 medicines)	Imported only: not manufactured in Tanzania (20 medicines)	Manufactured in Tanzania and imported (21 medicines)	Imported only: not manufactured in Tanzania (19 medicines)
Rural	0.53 (0.016)	0.26 (0.014)	0.49 (0.016)	0.34 (0.016)
Urban	0.71 (0.015)	0.56 (0.016)	0.63 (0.016)	0.58 (0.017)
Difference	-0.18 (0.022)	-0.30 (0.022)	-0.14 (0.023)	-0.24 (0.023)
Two sample test of proportions:	z-test = -7.91	z-test = -13.27	z-test = -5.93	z-test = -9.91
H0 : Prural = Purban	Pr(|Z| < |z|) = 0.0000	Pr(|Z| < |z|) = 0.0000	Pr(|Z| < |z|) = 0.0000	Pr(|Z| < |z|) = 0.0000
Ha : Prural ≠ Purban	Null-hypothesis is rejected	Null-hypothesis is rejected	Null-hypothesis is rejected	Null-hypothesis is rejected

Note: sampling errors in brackets (in italics).