Table 3

Multiple regression analysis for lumbar spine BMD

Variable	Coefficient b	Standard error (SE(b))	p value	Lower 95% CL	Upper 95% CL
Intercept	0.587	0.114	<0.0001	0.360	0.814
Sex (F vs M)	0.074	0.026	0.005	0.023	0.126
Age 20+	0.020	0.026	0.439	–0.032	0.072
SK score	0.0032	0.00095	0.001	0.0013	0.005
BMI	0.012	0.006	0.036	0.001	0.024
No. IV antibiotic treatments	–0.014	0.007	0.045	–0.027	0.000
Oral steroids	–0.082	0.034	0.017	–0.149	–0.015

SK score = Shwachman-Kulczycki clinical score; BMI = body mass index; CL = confidence limit.
96 patients had complete data on these variables.
Adjusted R ² = 0.33; residual standard error = 0.113.