Table 1.
Study designs from four detailed studies published between 1931 and 1958
| Author (Year) | Study design | Study period | DM definition | TB definition | n | Age groups |
|---|---|---|---|---|---|---|
| A.L. Banyai (1931) | A. Prevalence of DM in TB patients admitted to the Muirdale Sanatorium, Winsconsin, USA | 1923-1929 | Not specified | Admission to sanatorium | 5,224 a | All ages, age groups not specified |
| B. Summary of previous reports on the prevalence of TB-DM | ||||||
| H. Root (1934) | A. Prevalence of TB from autopsies in DM patients at New England Deaconess Hospital | 1880-1932 | Not specified | Autopsy | 1,000 b | Not specified |
| B. Prevalence of TB by chest x-ray in DM patients at New England Deaconess Hospital | 1880-1923 | Not specified | Chest X-ray | 1,659 b | Not specified | |
| C. Summary of previous reports on the prevalence of TB in DM patients | 1859-1932 | Not specified | All based on autopsies | see Table 2 | Not specified | |
| K. Boucot et al. (1952) | Prevalence of TB in all DM patients consecutively presenting to four hospital clinics in Philadelphia. Compare to database from population survey of 71,767 Philadelphia industrial health workers 1942-9145 (not shown in table). | 1945-1947 | Screening: FBS >120mg/dl or RBS >170mg/dL with glycosuria Diagnosis:RBS > 200 mg/dL or abnormal OGTT | Roentgenography and Photofluography | 3,106 b | < 20 yrs, n=108/3106 (3.4%) 20-40yrs, n=324/3106 (10.4%) 40-60 yrs, n=1380/3106 (44.4%) 60-80 yrs, n=1245/3106 (40%) > 80 yrs, n=28/3106 (0.9%) unknown, n=23/3106 (0.07%) |
| H. Silwer & P.N. Oscarsson (1958) | A. Cross-sectional prevalence of DM in all the population of the country of Kristianstad, Sweden | 1954-1958 | Hospital records; DM referrals | not specified | 260,491 c | Unspecified |
| B. Cross sectional prevalence of TB in DM patients enrolled in the Kristianstad study | 1954-1958 | Same as study A. | Roentgenography, Fluoroscopy and Photofluorography | 1,326 b,d | < 40 yrs, n=231/1270 (18.1%) 40-60yrs, n=368/1270 (28.9%) 60-80 yrs, n=671/1270 (52.8%) |
|
a
TB patients only;
b
DM patients only;
c
General population;
d
56/1,326 not screened for TB, so total studied were 1,270; FBS, Fasting blood sugar; RBS, Random blood sugar; OGTT, oral glucose tolerance test, with cut-off for “abnormal” not specified; n= total sample size