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Table 1—

Within- and between-group comparisons of changes in characteristics between baseline and follow-up among six groups

Baseline NGT
Baseline IGR
Time × group effect*
Follow-up
Follow-up
NGTIGRDiabetesNGTIGRDiabetes
n 213 94 51 90 84 95  
Age at baseline (years) 47 ± 11 48 ± 10 49 ± 11 47 ± 11 51 ± 10 50 ± 10 0.013 
BMI at baseline (kg/m2) 23.7 ± 3.2 24.9 ± 3.2 25.2 ± 3.7 24.6 ± 3.3 24.9 ± 3.0 26.2 ± 3.5 0.001 
BMI at follow-up (kg/m2) 24.6 ± 3.4 26.2 ± 5.2 26.1 ± 3.5 25.0 ± 3.5 26.1 ± 3.1 26.6 ± 3.2 0.002 
Change in BMI (kg/m20.9 ± 2.1 1.3 ± 4.7 0.9 ± 2.1 0.4 ± 2.0 1.2 ± 3.0 0.4 ± 2.3 NS 
 (3.8) (5.2) (3.6) (1.6) (4.8) (1.5)  
Change in obesity 5 (16) 20 (44) 14 (30) 0 (0) 19 (40) 6 (9.4) 0.002 
Change in hypertention 8 (31) 16 (40) 12 (22) 10 (21) 16 (39) 17 (33) NS 
Change in dyslipidemia 0 (0) 3 (11) 0 (0) −10 (−27) 3 (7.3) 4 (7) NS 
Change in insulin resistance 6 (35) 19 (73) 16 (64) 7 (29) 13 (54) 14 (34) NS 
Baseline NGT
Baseline IGR
Time × group effect*
Follow-up
Follow-up
NGTIGRDiabetesNGTIGRDiabetes
n 213 94 51 90 84 95  
Age at baseline (years) 47 ± 11 48 ± 10 49 ± 11 47 ± 11 51 ± 10 50 ± 10 0.013 
BMI at baseline (kg/m2) 23.7 ± 3.2 24.9 ± 3.2 25.2 ± 3.7 24.6 ± 3.3 24.9 ± 3.0 26.2 ± 3.5 0.001 
BMI at follow-up (kg/m2) 24.6 ± 3.4 26.2 ± 5.2 26.1 ± 3.5 25.0 ± 3.5 26.1 ± 3.1 26.6 ± 3.2 0.002 
Change in BMI (kg/m20.9 ± 2.1 1.3 ± 4.7 0.9 ± 2.1 0.4 ± 2.0 1.2 ± 3.0 0.4 ± 2.3 NS 
 (3.8) (5.2) (3.6) (1.6) (4.8) (1.5)  
Change in obesity 5 (16) 20 (44) 14 (30) 0 (0) 19 (40) 6 (9.4) 0.002 
Change in hypertention 8 (31) 16 (40) 12 (22) 10 (21) 16 (39) 17 (33) NS 
Change in dyslipidemia 0 (0) 3 (11) 0 (0) −10 (−27) 3 (7.3) 4 (7) NS 
Change in insulin resistance 6 (35) 19 (73) 16 (64) 7 (29) 13 (54) 14 (34) NS 

Data are means ± SD or percentage (percentage change). Percentage change (given in parentheses) in a variable is expressed as a percentage at the baseline examination. P < 0.05 within-group comparisons between baseline and follow-up are in bold.

*

Between-group comparisons adjusted for age and sex among all six groups.

ANOVA adjusted for sex (age at baseline) and age.

Adjusted OR for incident IGR or diabetes was 2.20 (95% CI 1.36–3.57).

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