Table 2.

Concentration indices for the knowledge about COVID-19 by income and education across regions.

	Income ranking		Education ranking
Region	Erreygers index	Confidence interval	Erreygers index	Confidence Interval
AlBaha	0.009	[−0.018, 0.036]	−0.001	[−0.031, 0.029]
AlJouf/Quriat	0.029	[−0.009, 0.067]	0.016	[−0.029, 0.062]
AlMadina Almonawra	0.008	[−0.004, 0.020]	0.013**	[0.001, 0.024]
Aseer/Bisha	0.015***	[0.005, 0.025]	0.015***	[0.006, 0.024]
Eastern Region	0.007	[−0.003, 0.017]	0.005	[−0.007, 0.016]
Haiel	0.023**	[0.000, 0.047]	0.014	[0.005, 0.022]
Jazan	0.006	[−0.023, 0.036]	0.010	[−0.020, 0.041]
Najran	0.008	[−0.012, 0.028]	0.011	[−0.008, 0.030]
Northern Borders	−0.020	[−0.078, 0.038]	0.001	[−0.020, 0.022]
Qaseem	0.022*	[−0.003, 0.048]	0.016	[−0.013, 0.045]
Riyadh	0.014***	[0.007, 0.020]	0.009***	[0.001, 0.021]
Tabouk	0.004	[−0.026, 0.034]	0.014	[−0.008, 0.036]
Western region	0.017***	[0.014, 0.020]	0.013***	[0.010, 0.016]

^***P < 0.01,

^**P < 0.05,

^*P < 0.1.