Local production of pharmaceuticals in Africa and access to essential medicines: 'urban bias’ in access to imported medicines in Tanzania and its policy implications

Table 2 Probability of finding a tracer medicine manufactured in Tanzania in a sample outlet, by rural and urban location, 2006 and 2009 (40 medicines)

Location	2006			2009
Location	Probability	Standard error	Sample size	Probability	Standard error	Sample size
Rural	0.172	0.0087	1880	0.113	0.0073	1880
Urban	0.163	0.0086	1840	0.097	0.0070	1800
*Difference*	0.009	0.0122		0.016	0.010
Two sample test of proportions:	z-test = 0.7588			z-test = 1.587
H₀ : P_rural = P_urban	Pr(\|Z\| < \|z\|) = 0.4480			Pr(\|Z\| < \|z\|) = 0.112
H_a : P_rural ≠ P_urban	Null-hypothesis is accepted			Null-hypothesis is accepted

ISSN: 1744-8603