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Table 1 Distribution of Characteristics by Household Intactness: KPNC Puberty Study (2009–2020), N = 26,044

From: Early life household intactness and timing of pubertal onset in girls: a prospective cohort study

Household intactness

Non-intact household

before age 2 years

(n = 2,034)

Non-intact household

during age 2–6 years

(n = 2,186)

Intact household

(n = 21,824)

P value

 

N

%

N

%

N

%

 

Neighborhood Annual Household Income ($)a, b

65,088

(28,353)

68,670

(28,557)

77,833

(31,052)

< 0.001

Race/ethnicity

 White

533

5.6

757

8.0

8,187

86.4

< 0.001

 Black

523

29.7

332

18.8

908

51.5

 

 Hispanic & Latinx

654

9.6

648

9.6

5,482

80.8

 

 Asian/Pacific Islander

208

3.6

286

4.9

5,364

91.6

 

 Other/Unknown

116

5.4

163

7.5

1,883

87.1

 

Prepubertal BMI

 < 85th percentile

1,240

6.7

1,390

7.5

15,845

85.8

< 0.001

 ≥ 85th percentile

794

10.5

796

10.5

5,979

79.0

 
  1. BMI body mass index; KPNC Kaiser Permanente Northern California
  2. aValues are expressed as mean (standard deviation)
  3. bCalculated using 2010 Census data by address at or within one year of birth