A Research Study in Children Born Small and Who Stayed Small. Treatment is Somapacitan Once a Week Compared to Norditropin® Once a Day

Height Velocity

Time frame · Baseline (week 0); week 26

Height velocity (HV) was derived from height measurements taken at baseline (week 0) and week 26 visit as: HV = (height at 26 weeks visit - height at baseline)/(time from baseline to 26 weeks visit in years). The outcome measure was evaluated based on the data from in-trial observation period. In-trial observation period: from first administration and up until week 26 or last trial contact, whichever came first.

Change in Ratio of Bone Age Versus Chronological Age

Time frame · Baseline (week 0); week 52

Change in ratio of bone age (years) versus chronological age (years) from baseline (week 0) to week 52 is presented. X-rays of left hand and wrist for bone age assessment according to the Greulich and Pyle atlas were taken. X-ray images were sent to a central imaging laboratory for evaluation. Chronological Age (years) was calculated as: (Date minus Date of Birth) divided by 365.25. The outcome measure was evaluated based on the data from in-trial observation period. In-trial observation period: from first administration and up until week 52 or last trial contact, whichever came first.

Change in Height Standard Deviation Score (HSDS)

Time frame · Baseline (week 0); week 26

Change in HSDS from baseline (week 0) to week 26 is presented. HSDS was derived using Centre for Disease Control and Prevention (CDC) standards. HSDS = \[(height/population median)\^skewness - 1\]/(skewness \* population standard deviation) where skewness, median and standard deviation is given by a reference growth table for the corresponding chronological age. The range for HSDS was -10 to +10. Negative scores indicated a height below the mean height for a child with the same age and gender, whereas positive scores indicated a height above the mean height for a child with the same age and gender. Positive value in change from baseline in HSDS indicated that HSDS was better than baseline HSDS In-trial observation period: from first administration and up until week 26 or last trial contact, whichever came first.

Change in Height Velocity Standard Deviation Score (HVSDS)

Time frame · Baseline (week 0); week 26

Change in HVSDS from baseline (week 0) to week 26 is presented. HVSDS was derived using Prader standards. HV SDS was calculated using the formula: HV SDS = (height velocity - mean)/standard deviation (SD), where height velocity was the height velocity variable measured, mean and SD of height velocity by gender and age for the reference population. The range for HVSDS was -10 to +10. Negative scores indicated a height velocity below the mean height velocity for a child with the same age and gender, whereas positive scores indicated a height velocity above the mean height velocity for a child with the same age and gender. Positive value in change from baseline in HVSDS indicated that HVSDS was better than baseline HVSDS. The outcome measure was evaluated based on the data from in-trial observation period. In-trial observation period: from first administration and up until week 26 or last trial contact, whichever came first.

Change in Fasting Plasma Glucose

Time frame · Baseline (week 0); week 26

Change in fasting plasma glucose from baseline (week 0) to week 26 is presented. The outcome measure was evaluated based on the data from on-treatment observation period. On-treatment observation period: from first administration and up until last trial contact, week 26 or 14 days after last administration, whichever came first.

Change in Homeostatic Model Assessment for Steady State Beta Cell Function (HOMA-B)

Time frame · Baseline (week 0); week 26

Change in HOMA-B from baseline (week 0) to week 26 is presented. HOMA-B is a measure of the beta cell function and was calculated as follows: HOMA-B = (20 \* fasting insulin (picomoles per liter \[pmol/L\]) \* 1/6(microunit per milliliter \[µU/mL\]))/ FPG(mmol/L)-3.5). HOMA-beta score ranges from minus infinity to infinity (no limits). Higher score means better beta-cell function for HOMA-beta. Negative change from baseline (week 0) in HOMA-B indicated a worse outcome. The outcome measure was evaluated based on the data from on-treatment observation period. On-treatment observation period: from first administration and up until last trial contact, week 26 or 14 days after last administration, whichever came first.

Change in Homeostatic Model Assessment for Insulin Resistance (HOMA-IR)

Time frame · Baseline (week 0); week 26

Change in HOMA-IR from baseline (week 0) to week 26 is presented. Insulin resistance is a condition in which cells fail to respond to normal actions of hormone in body. HOMA-IR is calculated using a participant's fasting plasma insulin and glucose levels. HOMA-IR = fasting serum insulin (micro international units per milliliter (μU/ml)) × fasting plasma glucose (millimoles per liter (mmol/l)) / 22.5. HOMA-IR scores are classified as follows: less than 1.0: considered insulin sensitive, 0.5-1.4: considered healthy, above 1.8: considered early insulin resistance; above 2.7 is considered significant insulin resistance. HOMA-IR score ranges from 0-infinity (no upper limit). Higher the score, higher the level of insulin resistance. The outcome measure was evaluated based on the data from on-treatment observation period. On-treatment observation period: from first administration and up until last trial contact, week 26 or 14 days after last administration, whichever came first.

Change in Glycated Haemoglobin (HbA1c)

Time frame · Baseline (week 0); week 26

Change in HbA1c from baseline (week 0) to week 26 is presented. The outcome measure was evaluated based on the data from on-treatment observation period. On-treatment observation period: from first administration and up until last trial contact, week 26 or 14 days after last administration, whichever came first.

Change in Insulin-like Growth Factor I (IGF-I) Standard Deviation Score (SDS)

Time frame · Baseline (week 0); week 26

Change in IGF-I SDS from baseline (week 0) to week 26 is presented. IGF-I SDS was provided by the central laboratory; its calculation is based on the actual value of IGF-1 minus mean reference value of IGF-1 divided by reference standard deviation of IGF-1. The range for IGF-I SDS was from -10 to +10. Negative scores indicated a IGF-I below the mean IGF-I for a child with the same age and gender, whereas positive scores indicated a IGF-I above the mean IGF-I for a child with the same age and gender. Positive value in change from baseline in IGF-I SDS indicated that IGF-I SDS was higher than baseline IGF-I SDS. The outcome measure was evaluated based on the data from on-treatment observation period. On-treatment observation period: from first administration and up until last trial contact, week 26 or 14 days after last administration, whichever came first.

Change in Insulin-like Growth Factor Binding Protein 3 (IGFBP-3) SDS

Time frame · Baseline (week 0); week 26

Change in IGFBP-3 SDS from baseline (week 0) to week 26 is presented. The range for IGFBP-3 SDS was from -10 to +10. Negative scores indicated a IGFBP-3 below the mean IGFBP-3 for a child with the same age and gender, whereas positive scores indicated a IGFBP-3 above the mean IGFBP-3 for a child with the same age and gender. Positive value in change from baseline in IGFBP-3 SDS indicated that IGFBP-3 SDS was higher than baseline IGFBP-3 SDS. The outcome measure was evaluated based on the data from on-treatment observation period. On-treatment observation period: from first administration and up until last trial contact, week 26 or 14 days after last administration, whichever came first.