Study of respiratory symptoms among sputum positive

Cigarette smokers were categorized into 3 groups. Mild, moderate,
and heavy smokers, according to the number ofpack years (Miller et
at, 1982) Mild < 20 pack years. Moderate 20-49 pack years and
heavy >49 pack years) where pack years calculated as follow:
Pack year = No ofcig! day X duration in years
b- History ofpresent illness:
Including general and respiratory symptoms (cough, expectoration,
r chest pain, dyspnea and chest wheezes) (Mobasher, 1993). Leitch (2000),
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suspected plumonary tuberculosis on clinical grounds when (persistent
cough with or without sputum, haemoptysis, general malaise, weight loss,
and recurrent colds and symptoms free discovered on routine radiograph)
were present. Weight loss was defined as greater than 4.5kg or 10% of
ideal body weight within last 6 months (Cohen et at, 1996). Dyspnea was
classified from (grade 0) to (grade III) by Mobasher (1993).
(1) Grade 0 : dyspnea on extraordinary effort.
(2) Grade I : dyspnea on ordinary effort.
(3) Grade II : dyspnea on slight effort.
(4) Grade III : dyspnea at rest.
Some symptoms were stressed upon chest pain were asked about the
nature and site. Hamoptysis was classified into degrees by Muren, (1982),
and Mobasher (1993): mild, moderate and severe.
"'Mild = occasionally blood - streaked sputum,
'" Moderate = persistent blood streaked sputum and frank blood,
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