TABLE 2.
Association between change in GDQS and weight and waist circumference change within a 2-y period: Mexican Teachers’ Cohort1
| Largest decrease | Small decrease | Little change | Small increase | Largest increase | P-trend2 | |
|---|---|---|---|---|---|---|
| Total GDQS change | <−5 | −5 to <−2 | −2 to 2 | >2 to 5 | >5 | |
| Weight change, kg | ||||||
| Age- and state-adjusted | 0.36 (0.06, 0.66) | 0.24 (0.01, 0.47) | Reference | −0.39 (−0.62, −0.15) | −0.70 (−0.98, −0.41) | <0.0001 |
| Multivariable-adjusted3 | 0.50 (0.19, 0.81) | 0.33 (0.09, 0.57) | Reference | −0.43 (−0.67, −0.20) | −0.81 (−1.11, −0.51) | <0.0001 |
| Waist circumference change, cm | ||||||
| Age- and state-adjusted | 0.54 (0.04, 1.12) | 0.24 (−0.19, 0.69) | Reference | −0.49 (−0.93, −0.05) | −0.99 (−1.53, −0.45) | <0.0001 |
| Multivariable-adjusted3 | 0.71 (0.09, 1.32) | 0.32 (−0.12, 0.77) | Reference | −0.49 (−0.94, −0.04) | −1.05 (−1.62, −0.48) | <0.0001 |
| GDQS+ score change | <−2.7 | −2.0 to <−0.2 | 0 to 1.7 | >2.0 to 4.0 | >4.2 | |
| Weight change, kg | ||||||
| Age- and state-adjusted4 | 0.22 (−0.04, 0.49) | 0.11 (−0.15, 0.37) | Reference | −0.19 (−0.45, 0.07) | −0.50 (−0.76, −0.23) | <0.0001 |
| Multivariable-adjusted3,4 | 0.22 (−0.04, 0.50) | 0.10 (−0.16, 0.36) | Reference | −0.21 (−0.47, 0.05) | −0.52 (−0.79, −0.24) | <0.0001 |
| Waist circumference change, cm | ||||||
| Age- and state-adjusted4 | 0.30 (−0.19, 0.81) | 0.10 (−0.41, 0.61) | Reference | −0.21 (−0.72, 0.29) | −0.81 (−1.32, −0.30) | 0.0002 |
| Multivariable-adjusted3,4 | 0.32 (−0.19, 0.84) | 0.10 (−0.41, 0.61) | Reference | −0.22 (−0.73, 0.28) | −0.79 (−1.32, −0.27) | <0.0001 |
| GDQS− score change | <−2.0 | −1.0 | 0 | 1.0 | >2.0 | |
| Weight change, kg | ||||||
| Age- and state-adjusted4 | 0.36 (0.10, 0.62) | 0.10 (−0.17, 0.39) | Reference | −0.25 (−0.53, 0.02) | −0.32 (−0.59, −0.06) | <0.0001 |
| Multivariable-adjusted3,4 | 0.36 (0.10, 0.62) | 0.14 (−0.14, 0.42) | Reference | −0.20 (−0.48, 0.07) | −0.25 (−0.51, 0.01) | <0.0001 |
| Waist circumference change, cm | ||||||
| Age- and state-adjusted4 | 0.95 (0.46, 1.45) | 0.78 (0.24, 1.32) | Reference | 0.45 (−0.08, 0.99) | −0.14 (−0.64, 0.35) | 0.0143 |
| Multivariable-adjusted3,4 | 0.98 (0.47, 1.48) | 0.80 (0.25, 1.34) | Reference | 0.49 (−0.04, 1.03) | −0.07 (−0.57, 0.43) | 0.0082 |
Values are β coefficients (95% CIs). n = 8967 women were included in the weight change analysis; n = 7588 women were included in the waist circumference analysis. GDQS+ and GDQS− scores were categorized in quintiles. GDQS, Global Diet Quality Score; GDQS+, Global Diet Quality Score positive submetric; GDQS−, Global Diet Quality Score negative submetric.
Medians were fitted in a multivariate model to estimate P-trend.
Values were adjusted for baseline age (continuous); change in energy (continuous); state (Jalisco, Veracruz); baseline GDQS (continuous); 2006 and 2008 physical activity (low, medium, high); baseline marital status (single, living together, married, separated, widow); baseline education (none, high school or less, undergraduate degree, graduate degree or above); baseline household assets (lowest, medium, highest); baseline health insurance (public, private, other); baseline BMI (<25, 25–29.9, >30 kg/m2); and changes in smoking status (baseline past smokers, stayed nonsmokers, stayed smokers, quitters, starters) and alcohol consumption (baseline nondrinkers, stayed nondrinkers, stayed drinkers, quitters, starters).
Mutually adjusted for subscores.