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Table 2 Agreement between breast buds diagnosed by the girls and trained personnel, stratified by girl’s BMI z-score

From: Breast bud detection: a validation study in the Chilean Growth Obesity Cohort Study

 

Girl’s Breast Tanner rating

Breast Tanner rating by trained personnel

 

Tanner 2 +

Tanner 1

Kappa index

Spearman

N (%)

N (%)

(95% CI)

 
 

Study population

Entire Study Population (n = 474)

Tanner 2

24 (35.8)

132 (32.4)

0.02 (-0.06; 0.10)

0.03

Tanner 1

43 (64.2)

275 (67.6)

Total

67

407

 

Stratified by girls’ BMI z-score at assessment

Girls’ BMI z-score ≤ 1DS (n = 274)

Tanner 2

14 (35.9)

57 (24.3)

0.09 (0.004; 0.17)

0.09

Tanner 1

25 (64.1)

178 (75.7)

Total

39

235

Girls’ BMI z-score > 1DS (n = 200)

Tanner 2

10 (35.7)

75 (43.6)

-0.04 (-0.12; 0.03)

-0.06

Tanner 1

18 (64.3)

97 (56.4)

Total

28

172

  1. *BMI: Body Mass Index.