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Appendix I: Methods

This report is based on findings from a nationally representative survey of adults (18+) in India conducted by the Yale Program on Climate Change Communication and CVoter, an international survey company headquartered in Delhi, India. A nationally representative sample of respondents was contacted by mobile telephone using predictive dialing technology and computer-assisted telephone interviewing (CATI). The survey was translated into 12 languages (Hindi, Punjabi, Gujarati, Marathi, Kannada, Malayalam, Tamil, Telugu, Odiya, Bangla, Asamiya, and English) and respondents received the survey in one of those languages based on their geographic location in India. National Census-based demographic parameters were used to create sampling targets for gender, education, and socioeconomic status. The results were also weighted after completion of the data collection period to adjust the final sample to match national demographic parameters on gender, age, education, income, religion, and urbanicity. Interview dates: October 21, 2021 – January 9, 2022. Interviews: 4,619 adults (18+). Average margin of error: +/- 1.4 percentage points at the 95% confidence level.

In the data tables, bases specified are unweighted while percentages are weighted to match national population parameters. For tabulation purposes, percentage points are rounded to the nearest whole number. As a result, percentages in a given chart may total slightly higher or lower than 100%. Summed response categories (e.g., “strongly agree” + “somewhat agree”) are rounded after sums are calculated. For example, in some cases, the sum of 25% + 25% might be reported as 51% (e.g., 25.3% + 25.3% = 50.6%, which, after rounding, would be reported as 25% + 25% = 51%). The results from 2011 that have been used for comparisons over time have been recalculated using updated analytic and rounding rules, and thus may differ slightly from the results that were reported at that time.

The survey instrument was designed by Anthony Leiserowitz, Seth Rosenthal, Jennifer Carman, Jennifer Marlon, and Arunima Sircar of Yale University, Jagadish Thaker of the University of Auckland, and Yashwant Deshmukh and Guara Shukla of CVoter. All graphics (charts and tables) in the report were created by Liz Neyens of Yale University.