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CM8.2 | CM8.2 | Non-Communicable Disease Control at Primary Care — SDL Guide (Part 2)
Monitoring NCD Programme Performance
Measuring whether NCD control programmes are actually reducing disease burden requires a layered surveillance and programme-monitoring framework.
Population-based NCD risk factor surveillance uses the WHO STEPS (STEPwise approach to Surveillance) methodology, which India has adopted for national NCD surveys. STEPS surveys collect: Step 1 (questionnaire) — tobacco use, diet, physical activity, alcohol; Step 2 (physical measurements) — BP, height, weight, waist circumference; Step 3 (biochemical) — fasting blood glucose, lipids. The ICMR-NCD study (2017) and NFHS-5 (2019–21) are India's most cited national NCD burden data sources.
Programme performance at the PHC level is assessed through the cascade of care concept — a framework that tracks the proportion of the target population at each step from screening to outcome:
- Population screened (screening coverage rate)
- Screen-positive cases confirmed (diagnosis rate)
- Diagnosed cases initiated on treatment (treatment coverage)
- Treated cases achieving control targets (treatment success: BP <140/90; HbA1c <7%)
In India's diabetes and hypertension cascade, the largest gaps are between step 1 and 2 (most are unscreened) and between step 3 and 4 (treatment is initiated but control is not achieved). The PHC physician's performance is directly reflected in cascade metrics.
Key programme indicators reported quarterly from PHC to District NCD Cell include: number screened for hypertension/diabetes/three cancers; number screen-positive; number initiated on treatment; number referred to District NCD Clinic; number with follow-up visits recorded. These feed into the NPCDCS MIS (Management Information System) accessible to district health officials.
The concept of population attributable risk links programme performance to public health impact: if 35% of hypertension cases are controlled (BP <140/90), that fraction of the attributable stroke and MI burden is prevented. Even modest improvements in NCD control at PHC scale across a district translate to hundreds of prevented events.
SELF-CHECK
In the NCD cascade of care, which gap is MOST commonly reported as the largest in India's hypertension programme?
A. Between population diagnosed and treated (treatment initiation gap)
B. Between population screened and diagnosed (detection gap)
C. Between population treated and achieving BP control (control gap)
D. Both detection gap and control gap are approximately equal
Reveal Answer
Answer: B. Between population screened and diagnosed (detection gap)
In India's hypertension programme, the largest gap in the cascade is the detection gap — between those who have hypertension and those who have been screened and diagnosed. NFHS-5 data shows that approximately 35% of adults have hypertension but fewer than half have ever had their BP measured. This undetected pool is the primary bottleneck. Among those diagnosed, a further control gap exists (treatment is initiated but BP target not reached), making both gaps important — but detection is the larger one.
CLINICAL PEARL
Opportunistic screening saves the most lives. Research across India's NPCDCS sites consistently shows that the majority of newly detected hypertension and diabetes cases are found through opportunistic screening — patients who came for something entirely unrelated (an injury, antenatal care, a child's vaccination). The key habit is making BP measurement and blood glucose testing automatic for every adult over 30 who enters the PHC, regardless of their presenting complaint. A blood pressure cuff used every consultation costs nothing but habit change; the alternative — a stroke three years later — costs the family everything.
The PHC Physician's Role in NCD Prevention and Care
The primary care physician's NCD responsibilities encompass prevention, detection, treatment, monitoring, and community outreach — a comprehensive role that the NPCDCS framework operationalises.
Opportunistic and systematic screening: Make BP measurement and blood glucose testing routine for all adults ≥30 attending the PHC. During Village Health, Sanitation and Nutrition Days (VHSNDs), conduct population-level screening camps in collaboration with ASHA workers. Ensure all women aged 30–65 receive VIA screening every 5 years. Perform oral cavity visual inspection for tobacco users and elderly patients at every PHC visit.
Risk stratification: Use the WHO CVD risk chart (or Indian guidelines equivalent) to categorise patients as low (<10%), moderate (10–20%), high (20–30%), or very high (>30%) 10-year cardiovascular risk. This stratification guides management intensity — lifestyle modification alone for low risk; pharmacotherapy for high/very high risk regardless of single-variable thresholds.
Treatment and follow-up: Initiate standard pharmacotherapy per NPCDCS protocols (amlodipine, metformin, etc.); schedule quarterly follow-up visits for all NCD patients on treatment; track HbA1c every 3–6 months for diabetics and BP at every visit for hypertensives. Maintain the NCD register and report to District NCD Cell.
Lifestyle counselling (SNAP approach):
- Salt: restrict to <5 g/day (approximately 1 teaspoon)
- No tobacco: brief counselling at every visit; refer to tobacco cessation clinic if available
- Activity: prescribe 150 minutes/week of moderate-intensity physical activity
- Prudent diet: increase fruits and vegetables; reduce fried foods, refined carbohydrates, processed foods
Referral criteria: Refer when: suspected malignancy (oral, cervical, breast) — urgent referral to secondary/tertiary centre; diabetes with HbA1c >9% despite oral agents — consider insulin or refer; hypertensive emergency (BP ≥180/120 with target organ damage symptoms) — refer immediately to FRU or district hospital; stroke — emergency referral for thrombolysis window (0–4.5 hours); chronic kidney disease (eGFR <30 mL/min) complicating diabetes or hypertension.
Community-level NCD prevention: Conduct monthly health education sessions on tobacco cessation, dietary salt reduction, physical activity promotion, and cancer warning signs. Work with Panchayati Raj Institutions to restrict tobacco sales near schools and improve food environments.