Table 3

Age and height adjusted regression coefficients β and standard errors (SE) for lung function tests for 27 660 miners

		n		FVC			FEV₁			FEV₁%		FEF_25–75%
		n		β	SE		β	SE		β	SE	β	SE
1 episode of TB	2137	−0.120	0.013^3-165		−0.180	0.011^3-165	−2.162	0.165^3-165	−0.441	0.028^3-165
2 episodes of TB	366	−0.328	0.029^3-165		−0.362	0.026^3-165	−2.721	0.380^3-165	−0.709	0.064^3-165
3 episodes of TB	79	−0.404	0.062^3-165		−0.462	0.056^3-165	−3.843	0.810^3-165	−0.862	0.135^3-165
4+ episodes of TB	17	−0.771	0.133^3-165		−0.964	0.120^3-165	−10.995	1.742^3-165	−1.705	0.291^3-165
TB + pneumoconiosis	185	−0.237	0.041^3-165		−0.384	0.037^3-165	−5.707	0.534^3-165	−0.857	0.089^3-165
Pneumoconiosis only	1164	−0.139	0.017^3-165		−0.215	0.015^3-165	−2.917	0.223^3-165	−0.520	0.037^3-165
Total	df = 27659^3-151	R² = 0.3801			R² = 0.4237		R² = 0.1174		R² = 0.2241

TB = tuberculosis; FEV₁ = forced expiratory volume in one second; FVC = forced vital capacity; FEF_25–75% = forced expiratory flow at 25–75% of forced vital capacity.
↵3-165 p<0.001.
↵3-151 There were 23 712 additional miners who did not have TB who were used as a comparison group in the regression model.