Table 2 Descriptive statistics.
From: Impact of energy poverty on cognitive and mental health among middle-aged and older adults in China
Variable | Definition | Mean | SD |
|---|---|---|---|
CH | Score based on the response to the question “to what extent can you remember the main things that happened to you in a week”. | 2.975 | 1.315 |
MH | Average score of six indicators related to mental health. | 3.410 | 0.604 |
EPOV1 | Dummy variable equals 1 if “the respondent’s household energy consumption exceeds 10% of income”. | 0.278 | 0.448 |
EPOV2 | Dummy variable equals 1 if “the respondent’s household energy consumption exceeds 10% of income, and the income is at the bottom 50% of the total distribution”. | 0.252 | 0.434 |
EPOV3 | Dummy variable equals 1 if “the respondent’s household energy consumption exceeds double median percentage of the total sample”. | 0.277 | 0.447 |
EPOV4 | Dummy variable equals 1 if “the respondent’s household energy consumption exceeds double median percentage of the sample by provinces”. | 0.262 | 0.440 |
EPOV5 | Dummy variable equals 1 if “the respondent’s household energy consumption exceeds the median percentage of the total sample, and the income is at the bottom 25% of the total distribution”. | 0.243 | 0.429 |
EPOV6 | Indicator based on the combination of EPOV1, EPOV2, EPOV3, EPOV4, and EPOV5. | 0.263 | 0.396 |
Age | Age of the respondent. | 60.133 | 9.493 |
Gender | Dummy variable equals 1 if “respondent is male”. | 0.495 | 0.500 |
Educational levels | The highest level of education received by the respondent. | ||
Illiteracy | Dummy variable equals 1 if “respondent is illiterate”. | 0.135 | 0.342 |
Primary school | Dummy variable equals 1 if respondent’s highest education level is primary school”. | 0.333 | 0.471 |
Middle school | Dummy variable equals 1 if respondent’s highest education level is middle school”. | 0.233 | 0.423 |
High school | Dummy variable equals 1 if respondent’s highest education level is high school”. | 0.193 | 0.394 |
Vocational school | Dummy variable equals 1 if respondent’s highest education level is vocational school”. | 0.082 | 0.275 |
University or higher | Dummy variable equals 1 if respondent’s highest education level is university or higher”. | 0.024 | 0.152 |
Currently employed | Dummy variable equals 1 if “respondent is currently employed”. | 0.604 | 0.489 |
Training | Weekly exercise frequency of respondent. | 2.572 | 3.219 |
Social status | Respondent’s response to “how do you evaluate yourself in local society”, ranging from 1 (lowest) to 5 (highest). | 3.083 | 1.100 |
Married | Dummy variable equals 1 if “respondent is married”. | 0.867 | 0.339 |
Hukou | Dummy variable equals 1 if respondent’s registered residence is urban”. | 0.460 | 0.498 |
