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Table 3 Measures of other variables

From: Carbon emission trading system and stock price crash risk of heavily polluting listed companies in China: based on analyst coverage mechanism

Variable code

Variable name

Variable measure

SIGMA

Volatility of abnormal returns

Standard deviation of firm-specific weekly return

RET

Average abnormal return

Average firm-specific weekly return

SIZE

Total assets

The logarithm of total assets

LEV

Asset–liability ratio

Total liabilities to total assets

ROE

Return on equity

Net income to net assets

ABSDA

Accrued earnings management

The absolute of discretionary accrued earnings

TURN

Total assets turnover rate

Operating income to total assets

GENDER

Male Chief Executive Officer (CEO)

Male CEO are 1 and female CEO are 0

DEGREE

Highly educated CEO

1 for CEO with a bachelor's degree or above, and 0 for others

DUAL

Combining the CEO and Chairman

1 for CEO as chairman, and 0 for others

SALARY

Executive compensation incentive

Percentage of top three executives' compensation

INDEP

Independent directors

Proportion of independent directors in the board

FINRISK

Financial crisis

1 for after the 2008 financial crisis, and 0 otherwise

ABCFO

Abnormal cash flow

Abnormal cash flow of REM (Real Earnings Management) (Roychowdhury 2006)

PPE

The proportion of fixed assets

Ratio of fixed assets