Table 4.

Non-parametric correlations between pairs of sites for rank orders of EURO-D item difficulties

	Cuba	DR	Puerto Rico	Peru urban	Peru rural	Venezuela	Mexico urban	Mexico rural	China urban	China rural	India urban	India rural	Nigeria
Cuba	1.00	0.83**	0.83**	0.72**	0.54	0.87***	0.80**	0.67*	0.56	0.19	0.82**	0.74**	0.05
DR		1.00	0.84**	0.75**	0.64*	0.89***	0.83**	0.42	0.56	0.38	0.73**	0.73**	0.40
Puerto Rico			1.00	0.83**	0.74**	0.93***	0.97***	0.56	0.40	0.09	0.85**	0.77**	−0.07
Peru urban				1.00	0.92**	0.89***	0.87***	0.51	0.53	0.37	0.83**	0.71**	0.06
Peru rural					1.00	0.76**	0.80**	0.43	0.37	0.35	0.75**	0.62*	−0.06
Venezuela						1.00	0.91***	0.56	0.59*	0.33	0.83**	0.77**	0.12
Mexico urban							1.00	0.59*	0.46	0.12	0.83**	0.84**	0.03
Mexico rural								1.00	0.69*	−0.38	0.76**	0.78**	−0.03
China urban									1.000	0.04	0.69*	0.75**	0.43
China rural										1.00	0.03	−0.07	0.35
India urban											1.00	0.87***	−0.08
India rural												1.00	0.18

*p = 0.01 to <0.05.

**p = 0.001 to <0.01.

***p <0.001.