mbarton
commented
3 months ago Thanks for the report @princepsivannhs. Just acknowledging I can reproduce too with the BMI value you provided. We will have a look and get back to you.
Closed princepsivannhs closed 3 months ago
mbarton
commented
3 months ago Thanks for the report @princepsivannhs. Just acknowledging I can reproduce too with the BMI value you provided. We will have a look and get back to you.
mbarton
commented
3 months ago I can't see any obvious culprits from a quick look at the API results from the server. Have created a Storybook story for it on a branch in the react chart repo.
{
"birth_data": {
"birth_date": "2006-05-08",
"gestation_weeks": 40,
"gestation_days": 0,
"estimated_date_delivery": "2006-05-08",
"estimated_date_delivery_string": "Mon 08 May, 2006",
"sex": "male"
},
"measurement_dates": {
"observation_date": "2022-11-01",
"chronological_decimal_age": 16.484599589322382,
"corrected_decimal_age": 16.484599589322382,
"chronological_calendar_age": "16 years, 5 months, 3 weeks and 3 days",
"corrected_calendar_age": "16 years, 5 months, 3 weeks and 3 days",
"corrected_gestational_age": {
"corrected_gestation_weeks": null,
"corrected_gestation_days": null
},
"comments": {
"clinician_corrected_decimal_age_comment": "Born at term. No correction has been made for gestation.",
"lay_corrected_decimal_age_comment": "Your child was born on their due date.",
"clinician_chronological_decimal_age_comment": "Born Term. No correction has been made for gestation.",
"lay_chronological_decimal_age_comment": "Your child was born on their due date."
},
"corrected_decimal_age_error": null,
"chronological_decimal_age_error": null
},
"child_observation_value": {
"measurement_method": "bmi",
"observation_value": 36.3,
"observation_value_error": null
},
"measurement_calculated_values": {
"corrected_sds": 1.9929195642473767,
"corrected_centile": 97.7,
"corrected_centile_band": "This body mass index measurement is on or near the 98th centile.",
"chronological_sds": 1.9929195642473767,
"chronological_centile": 97.7,
"chronological_centile_band": "This body mass index measurement is on or near the 98th centile.",
"corrected_measurement_error": null,
"chronological_measurement_error": null,
"corrected_percentage_median_bmi": 163.3208998549931,
"chronological_percentage_median_bmi": 163.3208998549931
},
"plottable_data": {
"centile_data": {
"chronological_decimal_age_data": {
"x": 16.484599589322382,
"y": 36.3,
"b": null,
"centile": 97.7,
"sds": 1.9929195642473767,
"bone_age_label": null,
"events_text": null,
"bone_age_type": null,
"bone_age_sds": null,
"bone_age_centile": null,
"observation_error": null,
"age_type": "chronological_age",
"calendar_age": "16 years, 5 months, 3 weeks and 3 days",
"lay_comment": "Your child was born on their due date.",
"clinician_comment": "Born Term. No correction has been made for gestation.",
"age_error": null,
"centile_band": "This body mass index measurement is on or near the 98th centile.",
"observation_value_error": null
},
"corrected_decimal_age_data": {
"x": 16.484599589322382,
"y": 36.3,
"b": null,
"centile": 97.7,
"sds": 1.9929195642473767,
"bone_age_label": null,
"events_text": null,
"bone_age_type": null,
"bone_age_sds": null,
"bone_age_centile": null,
"observation_error": null,
"age_type": "corrected_age",
"calendar_age": "16 years, 5 months, 3 weeks and 3 days",
"corrected_gestational_age": "",
"lay_comment": "Your child was born on their due date.",
"clinician_comment": "Born at term. No correction has been made for gestation.",
"age_error": null,
"centile_band": "This body mass index measurement is on or near the 98th centile.",
"observation_value_error": null
}
},
"sds_data": {
"chronological_decimal_age_data": {
"x": 16.484599589322382,
"y": 1.9929195642473767,
"b": null,
"centile": 97.7,
"sds": null,
"bone_age_label": null,
"events_text": null,
"bone_age_type": null,
"bone_age_sds": null,
"bone_age_centile": null,
"observation_error": null,
"age_type": "chronological_age",
"calendar_age": "16 years, 5 months, 3 weeks and 3 days",
"lay_comment": "Your child was born on their due date.",
"clinician_comment": "Born Term. No correction has been made for gestation.",
"age_error": null,
"centile_band": "This body mass index measurement is on or near the 98th centile.",
"observation_value_error": null
},
"corrected_decimal_age_data": {
"x": 16.484599589322382,
"y": 1.9929195642473767,
"b": null,
"centile": 97.7,
"sds": null,
"bone_age_label": null,
"events_text": null,
"bone_age_type": null,
"bone_age_sds": null,
"bone_age_centile": null,
"observation_error": null,
"age_type": "corrected_age",
"calendar_age": "16 years, 5 months, 3 weeks and 3 days",
"corrected_gestational_age": "",
"lay_comment": "Your child was born on their due date.",
"clinician_comment": "Born at term. No correction has been made for gestation.",
"age_error": null,
"centile_band": "This body mass index measurement is on or near the 98th centile.",
"observation_value_error": null
}
}
},
"bone_age": {
"bone_age": null,
"bone_age_type": null,
"bone_age_sds": null,
"bone_age_centile": null,
"bone_age_text": null
},
"events_data": {
"events_text": null
}
}@princepsivannhs I'm able to trace the issue back to the source data used to plot the reference lines:
I will need my colleague @eatyourpeas (or maybe @pacharanero?) to comment further on how those values were generated
eatyourpeas
commented
3 months ago Issue now migrated to chart component repo and discussion continues there. Fix applied pending review (see screenshot). Closing this here therefore.
Hi,
We've been successfully using the RCPCH Digital Growth Charts API and the open-source React chart component after integrating these into our internally developed web application at Royal Cornwall Hospitals NHS Trust for over a year now.
One of our paediatricians identified an issue with the BMI chart for certain patients with Down’s syndrome. The BMI scale experiences significant jumps (up to a 1000 kg/m² in this case), resulting in barely visible plot points. Specifically, these points are squeezed near the Age axis. For visual reference, please see the attached image:
Additionally, I've been able to reproduce the issue on the RCPCH chart demo page (https://growth.rcpch.ac.uk/).
Please find below the measurement details used:
Birth Date: 08/05/2006 Measurement Date: 01/11/2022 Height: 160.02 cm Weight: 92.98 kg BMI: 36.3 kg/m²
Thanks in advance for your time.
Best regards, Prince Software Developer | RCHT