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Table 3 Crude and adjusted analysis of body perception according to changes in body weight between 4 and 23 years of age in the 1982 Pelotas birth cohort

From: Change in body weight and body image in young adults: a longitudinal study

  Body perception
Variables Crude analysis RRR (CI 95%) Adjusted analysis RRR (CI 95%)# Adjusted analysis RRR (CI 95%)&
Thinner Fatter Thinner Fatter Thinner Fatter
MEN       
Body mass index z-score change   <0.001 a   <0.001 a   <0.001 a
≥ +0.5 0.84 (0.63;1.10) 3.63 (2.81;4.68) 0.85 (0.64;1.13) 3.52 (2.71;4.56) 0.86 (0.65;1.14) 3.56 (2.75;4.60)
−0.49 to +0.49 -- -- -- -- -- --
≤ −0.5 1.65 (1.28;2.11) 1.06 (0.77;1.44) 1.65 (1.28;2.13) 1.05 (0.77;1.45) 1.60 (1.24;2.06) 1.05 (0.77;1.44)
WOMEN       
Body mass index z-score change   <0.001 a   <0.001 a   <0.001 a
≥ +0.5 0.62 (0.38;1.02) 3.85 (2.86;5.18) 0.51 (0.32;0.91) 4.08 (3.00;5.56) 0.57 (0.35;0.95) 3.71 (2.75;5.01)
−0.49 to +0.49 -- -- -- -- -- --
≤ −0.5 1.18 (0.85;1.64) 0.97 (0.75;1.26) 1.26 (0.89;1.78) 0.96 (0.73;1.26) 1.20 (0.85;1.68) 0.98 (0.75;1.28)
  1. CI: confidence interval aHeterogeneity test #adjusted for confounding variables (maternal schooling, factorial assets index in 1984, and family income in 1982) & adjusted for mediators (having children, marital status, work during the month prior to the interview, psychological well-being, smoking. insufficient physical activity, and presence of minor psychiatric disorders).
  2. Pelotas, Rio Grande do Sul state, Brazil, 1982 to 2004–5.