Compared to CC nonpatients, there was a lower proportion of CM users among CC patients (19.9% versus 24.0%), with an aOR of 0.80 (95% CI = 0.64–0.99) after controlling for age, urbanization of residence, and occupation (Table 2).Stratification analysis showed that the biggest difference in CM usage happened in the stratum of patients aged 50–59 years (aOR = 0.66, 95% CI = 0.44–0.99). There were no differences in using CM between CC patients and nonpatients in subgroups of urbanization of residence and occupation.