Cohort demographics
gender from name where unrecorded
A cross-sectional view of the diagnostic cohort at Anubhav Life Care, Barasat, with anaemia and tuberculosis treated as separate research domains. Each chart relates a result back to the rest of the panel or to patient demographics — gender is inferred from given name where it was not captured at registration.
Illustrative figures · scaled to the AKTIV → Neon research mirror · cohort n ≈ 18,400 patients · 36 curated TEST_KEYs · cross-sectional only
Cohort: patients with at least one haematology or iron-studies result in the curated anaemia TEST_KEY list. Severity follows WHO Hb cutoffs adjusted for sex.
gender from name where unrecorded
WHO Hb thresholds, by sex
% with Hb below WHO cutoff
microcytic ←→ macrocytic, n = 4,371 anaemic
serum Iron / TIBC / ferritin medians
anaemic patients with paired B12 result, n = 1,184
anaemic patients with paired HbA1c, n = 1,612
n = 2,408 paired results, Spearman ρ = 0.47
Cohort: patients with at least one sputum AFB, AFB-PCR, mycobacterial culture, Mantoux, or IGRA result in the curated TB TEST_KEY list. Active vs latent is not always separable — both views are kept here.
referred for any TB workup
ZN smear · n = 1,840
patients with paired results
cells = patients positive on BOTH modalities · diagonal = single-modality positives
n = 612, IGRA-paired subset shaded
QFT-Plus · n = 738
smear, PCR, culture or IGRA positive
TB-positive patients with paired Hb, n = 412
TB-positive patients with paired HbA1c, n = 318
From the patient-level cohort: every CBC, biochemistry, urine, body-fluid and (where paired) SamaClip vitals draw for any patient who ever had a TB workup, regardless of which day the sample was collected. TB-positive = smear / PCR / culture / IGRA reactive on any visit.
median of patient's most recent CBC
Elevated monocyte-to-lymphocyte ratio and reactive thrombocytosis remain the most consistent CBC fingerprint of active TB in this cohort.
median of latest paired draw
Low albumin + hyponatraemia + high CRP + low vitamin D is the classic chronic-infection picture; raised serum ADA is the cohort-specific finding worth tracking.
latest urine, n = 482
Sterile pyuria with a negative routine culture is the urinary tract's classic flag for genitourinary TB. Sent urine for AFB on 89 / 482 — yield was 4 %.
paired biochem + cytology, where sent
SamaClip + lab paired subset, n = 218
Where a SamaClip screen was paired to the lab visit (n = 218), TB+ patients sit lower on SpO₂, breathe faster, have suppressed HRV, and trend toward QTc-prolongation worth monitoring on bedaquiline / moxifloxacin therapy.
ever-positive cohort, n = 412
Source. AKTIV laboratory information system at Anubhav Life Care, mirrored nightly into a research-only Neon Postgres project. The cohort is defined by a curated set of 74 anaemia / tuberculosis / cardiac TEST_KEYs, but once a patient is in the cohort the mirror pulls the full pathology panel for every visit they ever had — haematology, biochemistry, hormones, serology, microbiology, urine, body fluids, cytology, sputum / culture / Mantoux / IGRA, and radiology free-text reports — so that comorbidities, complications, and incidental findings can be related back to the index condition.
Demographics. Age from MAST_PATIENT.DOB; sex from MAST_PATIENT.SEX where present, otherwise inferred from given name against a Bengali / Hindi / English first-name dictionary. Records where neither field nor name resolves are reported as unknown and excluded from sex-stratified panels.
Definitions. Anaemia cutoffs follow WHO (Hb < 13.0 g/dL adult M, < 12.0 non-pregnant adult F, < 11.0 pregnant F, < 11.5 children 5–11). TB-positive means any of: sputum AFB ≥ scanty, AFB-PCR detected, culture growth of M. tuberculosis, or IGRA reactive.
Vitals overlay. Where a patient also had a SamaClip non-invasive screen on the same day as a lab draw, the screen's outputs — non-invasive Hb, SpO₂, heart rate, PPG-derived respiratory rate, HRV (RMSSD), and screening ECG QTc — are joined to that lab draw on PATIENT_KEY × draw date. Only paired rows are counted in the vitals tile.
Caveat. Cross-sectional only. A single patient with repeat draws contributes once per panel, using the most recent value. Longitudinal trends are out of scope for this page.