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Table 3 Number of respondents divided according to the population of the city of residence

From: Orthodontic treatment demand for fixed treatment and aligners among young adults in middle Europe and South America – a questionnaire study

Country/City population

> 500 k (A)

100 k–500 k (B)

50 k–100 k (C)

< 50 k (D)

Chile

531 (79,2%)

70 (10,5%)

36 (5,4%)

33 (4,9%)

Poland

57 (13,5%)

217 (51,4%)

46 (10,9%)

102 (24,2%)

Total

588 (52,8%)

287 (26,3%)

82 (19,5%)

135 (12,4%)

Difference CL/PL

< 0.001

< 0.001

0.001

< 0.001