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Table 2 Description and comparison of independent variables

From: Medical insurance policy organized by Chinese government and the health inequity of the elderly: longitudinal comparison based on effect of New Cooperative Medical Scheme on health of rural elderly in 22 provinces and cities

   NCMS participation Province Age Gender Years of education Current utilization of adequate medical services Medical expenses in previous year
Mean 2005 0.117 1.95 86.68 1.58 1.39 1.15 810.59
2008 0.71 1.91 87.03 1.58 1.51 1.09 1082.98
Plural 2005 0 1 100 2 0 1 0
2008 1 1 100 2 0 1 0
Minimum 2005 0 1 63 1 0 1 0
2008 0 1 60 1 0 1 0
Maximum 2005 1 3 117 2 25 2 100000
2008 1 3 116 2 25 2 100000
Skewness 2005 2.389 0.096 −0.122 −0.321 3.342 1.983 14.025
2008 −0.904 0.168 −0.292 −0.33 2.178 2.765 14.444
Standard error of skewness 2005 0.027 0.026 0.026 0.026 0.026 0.026 0.027
2008 0.026 0.025 0.025 0.025 0.025 0.025 0.025
Kurtosis 2005 3.709 −1.617 −1.059 −1.897 6.601 1.934 379.101
2008 −1.183 −1.498 −0.885 −1.891 5.385 5.644 316.842
Standard error of kurtosis 2005 0.054 0.053 0.053 0.053 0.053 0.053 0.053
2008 0.052 0.049 0.049 0.049 0.049 0.049 0.050