Table 2.

Distribution of Nairobi's 4.1 million residents within 15, 30- and 45-min drive-time to different levels of health facilities during peak and off-peak traffic hours.

Healthcare	Time	Population in		P-value
level	(min)	millions (%)
		Peak hours	Off-peak hours
Primary	≤ 15 min	1.8 (45%)	2.0 (48%)	<0.001
	≤ 30 min	2.8 (68%)	3.1 (75%)	<0.001
	≤ 45 min	3.9 (95%)	4.0 (97%)	<0.001
Secondary	≤ 15 min	0.8 (20%)	1.8 (43%)	<0.001
	≤ 30 min	2.5 (62%)	2.9 (71%)	<0.001
	≤ 45 min	4.1 (100%)	4.1 (100%)	1
Tertiary	≤ 15 min	0.7 (17%)	1.3 (30%)	<0.001
	≤ 30 min	2.3 (55%)	2.9 (71%)	<0.001
	≤ 45 min	3.6 (86%)	3.7 (91%)	<0.001