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Table 1 Descriptive analysis of the variables

From: Are social security policies for Chinese landless farmers really effective on health in the process of Chinese rapid urbanization? a study on the effect of social security policies for Chinese landless farmers on their health-related quality of life

  Grades and answers % x ¯ ± s Skewness Standard error of skewness Kurtosis Standard error of kurtosis
Independent variables Mobility 1 = I can walk anywhere without any problems 41.7 1.90 ± 0.852 0.191 0.070 −1.597 0.140
2 = I have some problems in mobility 26.5
3 = I cannot get up 31.8
Self-care 1 = I can take good care of myself without any problems 39.6 1.95 ± 0.859 0.101 0.071 −1.637 0.141
2 = I have some problems in washing my face, brushing my teeth, bathing, and dressing 26.0
3 = I cannot wash my face, brush my teeth, bathe, and dress 34.3
Daily activities 1 = I can perform my daily activities without any problems 36.4 1.95 ± 0.822 0.092 0.070 −1.515 0.140
2 = I have some problems in performing my daily activities 32.2
3 = I cannot perform my daily activities 31.4
Pain/discomfort 1 = I do not feel any pain/discomfort 37.7 1.97 ± 0.852 0.051 0.070 −1.623 0.141
2 = I feel moderate pain/discomfort 27.3
3 = I feel extreme pain/discomfort 35.0
Anxiety/depression 1 = I do not feel anxiety/depression 37.5 1.99 ± 0.858 0.027 0.071 −1.641 0.141
2 = I feel moderate anxiety/depression 26.5
3 = I feel serious anxiety/depression 36.1
Dependent variables Policy1 Land acquisition compensation policy   2.82 ± 1.325 0.199 0.071 −1.118 0.142
Policy2 Medical insurance policy   2.76 ± 1.457 0.253 0.070 −1.351 0.140
Policy3 Pension insurance policy   2.68 ± 1.396 0.438 0.070 −1.138 0.140
Policy4 Employment security policy   2.78 ± 1.435 0.229 0.070 −1.352 0.140
Policy5 Basic livelihood guarantee policy   2.86 ± 1.346 0.226 0.071 −1.213 0.141
  Policy6 Housing compensation policy   2.65 ± 1.476 0.279 0.070 −1.395 0.139