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. 2016 Feb 22;11(2):e0149862. doi: 10.1371/journal.pone.0149862

Table 1. Socio-demographic profile and management practices for all forms of TB among private practitioners in Chennai, India (n = 228).

    Patients Diagnosed with TB in Past Year            
Characteristic Total (n = 228) n(%) ≤12 Patients (n = 110) n(%) >12 Patients (n = 118) n(%) Unadjusted PR (95% CI) P Adjusted PR (95% CI)1 P1 Adjusted PR (95% CI)2 P2
Male 160 (70) 67 (61) 93 (79) 1.6 (1.1–2.3) 0.01 1.2 (0.9–1.7) 0.23 1.3 (0.9–1.8) 0.21
Education
    MBBS 81 (35) 53 (48) 28 (24) REF REF REF
    MD (General internal medicine) 11 (5) 5 (4) 6 (5) 1.1 (0.6–1.8) 0.84 1.3 (0.9–2.0) 0.21 1.5 (0.8–2.6) 0.19
    MD (Chest/Pulmonary specialty) 39 (17) 6 (6) 33 (28) 1.9 (1.5–2.4) <0.001 1.9 (1.4–2.6) <0.001 2.3 (1.5–3.5) <0.001
    MD (Other specialty) 86 (38) 42 (38) 45 (38) 1.0 (0.8–1.3) 0.99 1.4 (0.9–2.1) 0.10 1.6 (1.0–2.5) 0.04
    MS 11 (5) 4 (4) 6 (5) 1.2 (0.7–2.1) 0.60 1.6 (0.8–3.2) 0.19 1.7 (0.8–3.7) 0.17
Years practicing, median [IQR] 20 [15–30] 20 [12–30] 25 [15–30] 1.0 (1.0–1.0) 0.03 1.0 (1.0–1.0) <0.001 1.0 (1.0–1.0) 0.01
Practitioner specialty
    General medicine 155 (68) 85 (77) 70 (59) REF REF REF
    Chest/Pulmonary specialist 37 (16) 4 (4) 33 (28) 1.9 (1.5–2.4) <0.001 Omitted 1.7 (1.3–2.1) <0.001
    Other* 36 (16) 21 (19) 15 (13) 0.8 (0.5–1.2) 0.21 0.8 (0.5–1.2) 0.30 0.8 (0.5–1.2) 0.22
Type of facility
    Government with private practice in evening 22 (10) 13 (12) 9 (8) REF REF
    Private standalone clinic or polyclinic 129 (56) 76 (69) 53 (45) 0.6 (0.5–0.8) <0.001 --
    Private hospital or nursing home 77 (34) 21 (19) 56 (47) 1.8 (1.4–2.3) <0.001 --
Action for pulmonary TB diagnosis
    Refer to RNTCP or PPM DOTS center 97 (42) 55 (50) 42 (36) REF REF
    Treatment in private sector 131 (58) 55 (50) 76 (64) 1.3 (1.0–1.8) 0.05 1.1 (0.8–1.4) 0.66
Knowledge of TB notification requirement** 214 (94) 99 (90) 115 (98) 2.5 (0.8–8.0) 0.12 1.7 (0.7–4.5) 0.26
    Notification training 118 (52) 39 (36) 79 (67) 1.9 (1.5–2.4) <0.001 1.5 (1.2–2.0) <0.01
    Notified RNCTP of any TB patients 49 (22) 20 (18) 29 (25) 1.2 (0.9–1.6) 0.25 1.0 (0.7–1.3) 0.84
Knowledge of serological antibody test ban 126 (55) 48 (44) 78 (66) 1.6 (1.1–2.3) 0.02 1.2 (0.9–1.6) 0.21
Awareness of PPM schemes via RNTCP 81 (35) 37 (34) 44 (37) 1.1 (0.8–1.5) 0.66 0.9 (0.7–1.2) 0.40
Source of information on TB**
    No sources/not PP's specialty 39 (17) 28 (16) 11 (9) 0.5 (0.3–0.9) 0.02 0.4 (0.2–0.8) <0.01
    Journals, books, newspaper, newsletters 82 (36) 36 (33) 46 (39) 1.1 (0.9–1.4) 0.28 0.8 (0.6–1.0) 0.03
    Internet 71 (31) 33 (30) 38 (32) 1.1 (0.8–1.3) 0.66 0.9 (0.7–1.2) 0.45
    CME or workshop 99 (43) 45 (41) 54 (46) 1.1 (0.8–1.5) 0.55 0.7 (0.5–1.0) 0.03
    Medical representative or colleague 25 (11) 15 (14) 10 (9) 0.8 (0.4–1.3) 0.33 0.7 (0.4–1.2) 0.24    

MD, Medical doctor degree; MS, Master of surgery degree; MBBS, Bachelor of medicine and bachelor of surgery undergraduate degrees; RNTCP, Revised National TB Control Program; PPM DOTS, Public-Private Mix directly observed therapy short course.

*Other MD and MS practitioner specialties included Obstetrics and gynecology (n = 15), Pediatrician (n = 5), Surgeon (General/Orthopedic/Ophthalmologic) (n = 4), Diabetes Specialist (n = 6), Ear nose and throat (n = 2), Oncologist (n = 1), and Radiologist (n = 1).

**Categories are not mutually exclusive.

†Unadjusted prevalence ratio comparing practitioners with annual TB patient volumes of at least 12 patients versus greater than 12 patients with TB per year.

1Prevalence ratio adjusted for all variables with data in this column. Adjusted PR for pulmonary specialist omitted due to overlap with education. Variance inflation factors were below 3.0 for all covariates included in the model.

2Prevalence ratio adjusted for sex, education, years practicing, and specialty. Variance inflation factors were below 3.0 for all covariates included in the model.