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. 2015 Sep;105(9):e54–e59. doi: 10.2105/AJPH.2015.302773

TABLE 2—

Annual Probability of Achieving Normal Weight by Initial BMI Category and Gender: United Kingdom, 2004–2014

Initial BMI Category No. Participants No. Person-Years During Follow-Up No. Attaining Normal BMI Annual Probability of Attaining Normal BMI, Estimate (95% CI)
Men, kg/m2
 30.0–34.9 27 966 179 746 857 1 in 210 (197, 225)
 35.0–39.9 27 490 174 386 249 1 in 701 (619, 797)
 40.0–44.9 14 767 91 528 71 1 in 1 290 (1023, 1651)
 ≥ 45.0 6481 38 367 106 1 in 362 (300, 442)
Women, kg/m2
 30.0–34.9 27 251 173 066 1 398 1 in 124 (118, 131)
 35.0–39.9 27 373 175 356 408 1 in 430 (390, 475)
 40.0–44.9 26 716 170 483 252 1 in 677 (599, 769)
 ≥ 45.0 18 451 113 540 187 1 in 608 (527, 704)

Note. BMI = body mass index; CI = confidence interval. Normal weight is having a BMI < 25 kg/m2.