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Table 2 Number of participants by region

From: Prevalence of an incompetent lip seal during growth periods throughout Japan: a large-scale, survey-based, cross-sectional study

Region

Number of participants (n)

Total

(Sampling rate)

Boys

Girls

Hokkaido and Tohoku

504 (14.8)

(0.026)

254

250

Kanto

644 (18.9)

(0.012)

331

313

Chubu

376 (11.1)

(0.014)

174

202

Kinki

691 (20.3)

(0.026)

343

348

Chugoku and Shikoku

441 (13.0)

(0.031)

205

236

Kyushu and Okinawa

743 (21.9)

(0.038)

354

389

Total

(n)

3399

 

1661

1738

(%)

100

(0.021)

48.9

51.1

  1. Parenthesis; %