Which variables in the table, if any, were measured on an interval, ordinal and ratio scale?

Table 1

Characteristics of the Study Sample (N = 842)

Sample Characteristic	Frequency (N)	Percentage or Mean (SD)	Range
Gender Female Male	408 434	48.5% 51.5%
Age (years)	842	55.1 (5.3)	44.0-67.0
Race/ethnicity White, not Hispanic African American	701 141	83.3% 16.7%
Smoking status Nonsmoker Currently smokes < 1 pack/day Currently smokes 1+ packs/day	698 91 53	82.9% 10.8% 6.3%
BMI	831	24.9 (4.1)	18.1-36.3