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Table 4 Adjusted associations between recommended LTPA (150 min/week) and maternal characteristics across surveys. Pelotas, Brazil, 2004–2015

From: Changes in leisure-time physical activity among Brazilian pregnant women: comparison between two birth cohort studies (2004 – 2015)

  Pre-pregnancy 1st trimester 2nd trimester 3rd trimester
Variables OR (95%CI) OR (95%CI) OR (95%CI) OR (95%CI)
  2004 2015 2004 2015 2004 2015 2004 2015
Maternal age (years)a
  p = 0.006 p = 0.636 p = 0.046 p = 0.013 p = 0.650 p = 0.106 p = 0.138 p = 0.554
 12 –19 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
 20 –29 1.12 (0.81 –1.56) 0.94 (0.68 –1.30) 1.19 (0.80 –1.77) 0.93 (0.58 –1.49) 1.16 (0.74 –1.80) 0.70 (0.40 –1.22) 0.99 (0.61 –1.62) 0.95 (0.47 –1.90)
 30 –39 1.69 (1.17 –2.44) 1.00 (0.70 –1.43) 1.69 (1.07 –2.67) 1.44 (0.85 –2.42) 1.34 (0.79 –2.27) 1.07 (0.57 –1.98) 0.71 (0.38 –1.34) 1.06 (0.48 –2.34)
 40 –47 1.08 (0.54 –2.18) 1.07 (0.58 –1.96) 1.01 (0.40 –2.57) 1.68 (0.73 –3.86) 0.43 (0.10 –1.89) 1.13 (0.40 –3.15) 0.46 (0.10 –2.09) 1.11 (0.28 –4.44)
Family income (quintiles)a p < 0.001 p = 0.05 p = 0.017 p = 0.061 p = 0.119 p = 0.073 p = 0.110 p = 0.068
 1 (poorest) 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
 2 1.21 (0.80 –1.84) 0.87 (0.63 –1.19) 1.32 (0.83 –2.11) 1.71 (1.06 –2.77) 1.45 (0.83 –2.55) 1.33 (0.76 –2.31) 1.39 (0.72 –2.69) 1.45 (0.72 –2.94)
 3 1.64 (1.11 –2.43) 1.04 (0.77 –1.42) 1.37 (0.87 –2.17) 1.26 (0.76 –2.10) 1.93 (1.14 –3.28) 0.91 (0.49 –1.67) 2.05 (1.11 –3.78) 1.32 (0.63 –2.77)
 4 2.10 (1.44 –3.07) 0.95 (0.70 –1.29) 1.36 (0.86 –2.14) 1.55 (0.95 –2.53) 1.42 (0.82 –2.47) 0.87 (0.47 –1.59) 1.59 (0.84 –3.03) 0.87 (0.39 –1.97)
 5 (wealthiest) 3.23 (2.21 –4.73) 1.36 (0.98 –1.90) 1.80 (1.14 –2.85) 1.75 (1.04 –2.95) 1.70 (0.98 –2.95) 1.88 (1.03 –3.43) 1.80 (0.94 –3.46) 2.64 (1.21 –5.78)
Schooling (years)a
  p < 0.001 p < 0.001 p < 0.001 p = 0.006 p < 0.001 p = 0.073 p < 0.001 p = 0.583
 0 –4 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
 5 –8 1.65 (1.08 –2.52) 2.07 (1.24 –3.43) 1.50 (0.89 –2.52) 1.23 (0.64 –2.37) 1.51 (0.74 –1.80) 1.11 (0.52 –2.38) 1.85 (0.86 –3.98) 0.84 (0.37 –1.94)
 9 –11 2.09 (1.35 –3.25) 2.72 (1.65 –4.50) 2.23 (1.31 –3.82) 1.23 (0.64 –2.36) 2.18 (1.15 –4.12) 1.16 (0.54 –2.49) 2.23 (1.00 –4.95) 0.72 (0.31 –1.69)
  ≥ 12 3.46 (2.12 –5.66) 4.74 (2.80 –8.03) 3.33 (1.82 –6.11) 2.20 (1.11 –4.35) 4.42 (2.17 –8.99) 1.97 (0.87 –4.45) 4.77 (1.97 –11.53) 0.77 (0.28 –1.98)
Paritya
  p = 0.004 p = 0.02 p = 0.002 p = 0.001 p = 0.003 p = 0.012 p = 0.040 p = 0.090
 1 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
 2 0.74 (0.57 –0.95) 0.75 (0.61 –0.93) 0.57 (0.41 –0.80) 0.62 (0.45 –0.84) 0.50 (0.34 –0.74) 0.60 (0.40 –0.89) 0.51 (0.32 –0.82) 0.73 (0.44 –1.21)
 3 0.66 (0.49 –0.88) 0.80 (0.60 –1.07) 0.59 (0.41 –0.84) 0.55 (0.35 –0.86) 0.56 (0.37 –0.85) 0.66 (0.39 –1.14) 0.62 (0.38 –1.03) 0.61 (0.30 –1.24)
Pre-pregnancy BMI
  p = 0.713 p = 0.423 p = 0.399 p = 0.485 p = 0.783 p = 0.056 p = 0.198 p = 0.198
  < 18.5 0.40 (0.21 –0.76) 0.90 (0.53 –1.51) 1.00 (0.43 –2.34) 1.26 (0.56 –2.86) 1.04 (0.45 –2.38) 0.83 (0.31 –2.21) 0.40 (0.12 –1.35) 1.35 (0.51 –3.62)
 18.5 –24.9 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
 25.0 –29.9 1.06 (0.80 –1.41) 1.24 (1.00 –1.53) 1.23 (0.80 –1.89) 1.02 (0.72 –1.44) 0.82 (0.51 –1.33) 0.70 (0.47 –1.06) 0.61 (0.34 –1.10) 0.83 (0.51 –1.37)
  > =30 1.11 (0.75 –1.65) 0.99 (0.77 –1.26) 1.14 (0.61 –2.10) 0.81 (0.53 –1.23) 1.11 (0.58 –2.10) 0.70 (0.43 –1.13) 0.94 (0.45 –1.96) 0.44 (0.21 –0.92)
Pre-pregnancy LTPA (≥150 min/week)    p < 0.001 p < 0.001 p < 0.001 p < 0.001 p < 0.001 p < 0.001
 Yes    51.7 (35.0 –76.4) 37.8 (26.5 –53.8) 26.9 (18.0 –40.1) 16.2 (11.2 –23.5) 15.6 (10.0 –24.2) 11.8 (7.4 –18.7)
 No    1.0 1.0 1.0 1.0 1.0 1.0
  1. aAdjusted for all other variables except pre-pregnancy BMI and LTPA
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