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. 2020 Feb 25;10(2):e032653. doi: 10.1136/bmjopen-2019-032653

Table 3.

Weight change at 3, 6 and 12 months

3 months 6 months 12 months
SMS+I
n=36
SMS only
n=33
SMS+I
n=36
SMS only
n=33
SMS+I
n=36
SMS only
n=33
Control
n=36
Weight change (kg), mean (SD)
 Observed cases only -2.79 (3.50)* −1.97 (3.97)† −4.59 (5.62)‡ −3.30 (4.92)§ −3.93 (5.74)‡ −1.64 (5.64)† −1.06 (6.29)¶
 BOCF −2.40 (3.38) −1.55 (3.60) −2.93 (4.98) −2.10 (4.21) −2.51 (4.94) −1.29 (5.03) −0.86 (5.64)
 LOCF −2.40 (3.38) −1.86 (3.88) −3.38 (4.92) −2.21 (4.39) −2.98 (4.91) −1.33 (5.04) −0.86 (5.64)
Weight change (%), mean (SD)
 Observed cases only −2.54 (3.47)* −1.95 (3.72)† −4.20 (5.54)‡ −3.02 (4.22)§ −3.51 (5.83)‡ −1.51 (4.65)† −1.00 (5.31)¶
 BOCF −2.18 (3.33) −1.53 (3.39) −2.69 (4.84) −1.92 (3.65) −2.24 (4.93) −1.19 (4.16) −0.80 (4.77)
 LOCF −2.18 (3.33) −1.53 (3.39) −3.11 (4.80) −2.06 (3.85) −2.68 (4.92) −1.22 (4.16) −0.80 (4.77)
Weight change categories (observed cases only), n (%)
 Weight gain 6 (19.4)* 8 (30.8)† 2 (8.7)‡ 6 (28.6)§ 5 (21.7)‡ 10 (38.5)† 14 (48.3)¶
 0–<3% weight loss 13 (41.9)* 10 (38.5)† 10 (43.5)‡ 7 (33.3)§ 5 (21.7)‡ 9 (34.6)† 7 (24.1)¶
 ≥3–<5% weight loss 4 (12.9)* 4 (15.4)† 3 (13.0)‡ 2 (9.5)§ 3 (13.0)‡ 4 (15.4)† 0 (0.0)¶
 ≥5-<10% weight loss 8 (25.8)* 2 (7.7)† 3 (13.0)‡ 4 (19.1)§ 7 (30.4)‡ 2 (7.7)† 6 (20.7)¶
 ≥10% weight loss 0 (0.0)* 2 (7.7)† 5 (21.7)‡ 2 (9.5)§ 3 (13.0)‡ 1 (3.9)† 2 (6.9)
BMI change, mean (SD)
 Observed cases only −0.89 (1.1) * −0.73 (1.32)† −1.45 (1.79)‡ −1.04 (1.49)§ −1.24 (1.89)‡ −0.49 (1.68)† −0.47 (2.13)¶
 BOCF −0.75 (1.07) −0.59 (1.22) −0.92 (1.58) −0.66 (1.28) −0.78 (1.60) −0.37 (1.50) −0.37 (1.96)
 LOCF −0.75 (1.07) −0.59 (1.22) −0.93 (1.56) −0.69 (1.34) −0.93 (1.59) −0.38 (1.50) −0.37 (1.96)
Waist circumference change (cm), mean (SD)
 Observed cases only −3.74 (4.62)* −3.14 (4.3)† −4.70 (6.29)‡ −3.14 (4.34)§ −4.40 (6.08)‡ −2.30 (4.37)† −2.26 (4.97)¶
 BOCF −3.22 (4.47) −2.49 (3.9) −3.00 (5.49) −2.00 (3.76) −2.81 (5.82) −1.82 (3.98) −1.82 (4.53)
 LOCF −3.22 (4.47) −2.49 (3.9) −3.71 (5.76) −2.23 (4.03) −3.51 (4.48) −1.85 (3.97) −1.82 (4.53)

*N=31.

†N=26.

‡N=23.

§N=21.

BMI, body mass index; BOCF, baseline observation carried forward; LOCF, last observation carried forward.