Table 3.

Mean GI in the two groups over time.

	Baseline (T0)	First follow-up (T1)	Second follow-up (T2)	Third follow-up (T3)	p value^a
Intervention group	1.29 ± 0.49	1.13 ± 0.52 (1.20 ± 0.04)	0.98 ± 0.44 (1.04 ± 0.04)	0.95 ± 0.43 (1.00 ± 0.05)	p(GROUP): <0.001 p(TIME × GROUP): <0.001	<0.001**
Control group	1.49 ± 0.59	1.43 ± 0.57 (1.35 ± 0.04)	1.47 ± 0.54 (1.41 ± 0.04)	1.43 ± 0.56 (1.37 ± 0.05)	0.378

Baseline (T0)

First follow-up (T1)

Second follow-up (T2)

Third follow-up (T3)

p value^a

Mean ± SD

Unadjusted mean ± SD (adjusted mean ± SD)

Intervention group

1.29 ± 0.49

1.13 ± 0.52 (1.20 ± 0.04)

0.98 ± 0.44 (1.04 ± 0.04)

0.95 ± 0.43 (1.00 ± 0.05)

**p(GROUP): <0.001

**p(TIME × GROUP): <0.001

<0.001**

Control group

1.49 ± 0.59

1.43 ± 0.57 (1.35 ± 0.04)

1.47 ± 0.54 (1.41 ± 0.04)

1.43 ± 0.56 (1.37 ± 0.05)

0.378

**p-values are statistically significant.

^aRM-ANCOVA.