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. 2021 Feb 18;11:549928. doi: 10.3389/fendo.2020.549928

Table 1.

Frequencies of scores reported on each item of the Pubertal Development Scale based on caregiver and youth report for each sex.

  Caregiver Report Youth Report
  Males Females Males Females
  N = 6,141 N = 5,659 N = 6,158 N = 5,628
Height
Not Begun 22% (N = 1,381) 14% (N = 791) 14% (N = 844) 11% (N = 593)
Barely Started 20% (N = 1,231) 16% (N = 896) 20% (N = 1,246) 19%, (N = 1,048)
Underway 51% (N = 3,146) 63% (N = 3,543) 25% (N = 1,570) 22% (N = 1,257)
Complete 3% (N = 167) 4% (N = 208) 6% (N = 392) 6% (N = 362)
I don’t know 4% (N = 216) 4% (N = 221) 34% (N = 2,082) 42% (N = 2,339)
Refuse to answer <1% (N = 23) <1% (N = 28)
 
Body Hair
Not Begun 72% (N = 4,427) 52% (N = 2,922) 49% (N = 3,022) 46% (N = 2,578)
Barely Started 15% (N = 942) 20% (N = 1,153) 30% (N = 1,876) 30% (N = 1,691)
Underway 8% (N = 499) 23% (N = 1,277) 10% (N = 640) 12% (N = 690)
Complete 2% (N = 119) 3% (N = 160) 5% (N = 318) 5% (N = 309)
I don’t know 3% (N = 154) 3% (N = 147) 4% (N = 277) 6% (N = 324)
Refuse to answer <1% (N = 24) 1% (N = 34)
 
Skin Changes
Not Begun 73% (N = 4,492) 56% (N = 3,168) 50% (N = 3,098) 44% (N = 2,474)
Barely Started 18% (N = 1,116) 27% (N = 1,519) 25% (N = 1,569) 31% (N = 1,759)
Underway 6% (N = 358) 14% (N = 809) 7% (N = 435) 9% (N = 529)
Complete 1% (N = 62) 1% (N = 75) 3% (N = 157) 2% (N = 132)
I don’t know 2% (N = 113) 2% (N = 88) 14% (N = 873) 13% (N = 716)
Refuse to answer <1% (N = 25) <1% (N = 18)
 
Facial Hair
Not Begun 91% (N = 5,595) 53% (N = 3,273)
Barely Started 6% (N = 387) 30% (N = 1,874)
Underway 2% (N = 93) 8% (N = 493)
Complete <1% (N = 16) 3% (N = 187)
I don’t know 1% (N = 50) 5% (N = 320)
Refuse to answer <1% (N = 10)
 
Voice Change
Not Begun 93% (N = 5,699) 75% (N = 4,630)
Barely Started 5% (N = 309) 17% (N = 1,041)
Underway 1% (N = 63) 3% (N = 157)
Complete <1% (N = 10) 1% (N = 38)
I don’t know 1% (N = 60) 4% (N = 273)
Refuse to answer <1% (N = 18)
 
Breast Development
Not Begun 39% (N = 2,208) 31% (N = 1,736)
Barely Started 35% (N = 1,973) 35% (N = 1,977)
Underway 24% (N = 1,372) 13% (N = 755)
Complete 1% (N = 48) 2% (N = 126)
I don’t know 1% (N = 57) 17% (N = 959)
Refuse to answer 1% (N = 68)
 
Menarche
Yes 3% (N = 154) 3% (N = 163)
No 96% (N = 5,455) 87% (N = 4,871)
I don’t know 1% (N = 49) 10% (N = 537)
Refuse to answer 1% (N = 55)
 
Menarche Age (years)
7 <1% (N = 1) 1.8 (N = 3)
8 5.8% (N = 9) 7.4% (N = 12)
9 29.2% (N = 45) 31.3% (N = 51)
10 61.7% (N = 95) 53.4% (N = 87)
I don’t know 2.6% (N = 4) 5.5% (N = 9)
Refuse to answer 6.1% (N = 1)