This study aims to correlate the relationship between neck circumference and waist circumference as an adjunct in obtaining anthropometric measurements among patients with Type 2 Diabetes Mellitus (T2DM). The study follows a descriptive-correlational design to determine the cutoff points for neck circumference, BMI, and waist circumference in newly diagnosed T2DM patients.

A total of 40 participants were selected using purposive sampling.Neck circumference was measured at the mid-cervical area. Waist circumference was obtained at the midway between the costal margin and the iliac crest in the midaxillary line. BMI was computed for each participant. Data were analyzed using SPSS version 23 for both descriptive and inferential statistics. Descriptive statistics: Frequency, percentage, mean, and standard deviation were calculated. Cutoff point determination: Receiver Operating Characteristic (ROC) curve analysis was used to assess specificity and sensitivity. Correlation analysis: Pearson correlation coefficient was used to determine the strength of the relationship between neck and waist circumference.

Among the 40 participants, the following measurements were observed: Height: Ranged from 1.49 m to 1.70 m (M = 1.61, SD = 0.060) Weight: Ranged from 40 kg to 96 kg (M = 68.60, SD = 13.86) BMI: Ranged from 16.65 to 34.42 (M = 26.40, SD = 4.36) Waist Circumference: Ranged from 69 cm to 118 cm (M = 93.88, SD = 9.24) Neck Circumference: Ranged from 32 cm to 44 cm (M = 39.05, SD = 3.17) OC Curve Analysis Results: Area Under the Curve (AUC) for waist circumference = 0.828 (interpreted as excellent) AUC for neck circumference = 0.779 (interpreted as acceptable) AUC Interpretation Guide: 0.5: No discrimination 0.7 to 0.8: Acceptable 0.8 to 0.9: Excellent >0.9: Outstanding Pearson Correlation Coefficient Results: Neck circumference: 0.36 (moderate correlation) Waist circumference: 0.48 (moderate correlation)

The study found a moderate correlation between neck and waist circumference among newly diagnosed T2DM patients. The ROC curve analysis demonstrated acceptable to excellent discrimination for both neck and waist circumference, suggesting their potential as anthropometric markers in screening T2DM patients.