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. 2022 May 3;10(3):e002736. doi: 10.1136/bmjdrc-2021-002736

Table 3.

Primary outcomes (weight change and HbA1c change) at 12 months for participants with complete case data

Weight change (N=1534) HbA1c change (N=1502)
N Mean baseline weight Mean weight change at 12 months 95% CI lower 95% CI upper P value* N Mean baseline HbA1c Mean HbA1c change at 12 months 95% CI lower 95% CI upper P value*
Overall 1534 86.7 −3.1 −3.4 −2.8 n/a 1502 43.2 −1.6 −1.8 −1.4 n/a
Age 18–44 158 90.2 −2.1 −3.2 −1.0 0.0162 149 43.1 −1.8 −2.4 −1.2 0.6088
45–54 290 91.0 −2.5 −3.2 −1.7 281 43.3 −1.6 −1.9 −1.2
55–64 500 87.3 −3.7 −4.2 −3.1 486 43.0 −1.5 −1.8 −1.3
65–74 449 84.5 −3.3 −3.8 −2.7 453 43.3 −1.7 −2.0 −1.4
75+ 137 78.9 −3.2 −4.1 −2.4 133 43.4 −1.3 −1.8 −0.8
Sex Male 764 86.9 −3.1 −3.6 −2.7 0.9636 738 43.1 −1.5 −1.8 −1.3 0.5913
Female 769 86.5 −3.1 −3.5 −2.7 763 43.3 −1.7 −1.9 −1.4
Indeterminate 1 73.0 −1.5 1 46.0 −4.0
Ethnicity White 1199 88.5 −3.6 −3.9 −3.2 <0.0001 1172 43.2 −1.6 −1.8 −1.4 0.4492
Mixed 47 86.2 −2.1 −3.8 −0.5 45 43.3 −1.6 −2.5 −0.7
Asian 224 76.2 −1.2 −1.8 −0.7 227 43.1 −1.8 −2.2 −1.3
Black 57 91.4 −2.5 −4.3 −0.7 52 43.9 −1.6 −2.3 −0.8
Other 7 85.6 −0.9 −5.4 3.5 6 41.8 0.5 −5.2 6.2
Deprivation IMD 1 (most deprived) 226 88.0 −2.6 −3.5 −1.8 <0.0001 221 43.4 −1.9 −2.3 −1.6 0.3001
IMD 2 298 87.8 −2.5 −3.2 −1.8 290 43.3 −1.4 −1.8 −1.0
IMD 3 379 87.2 −2.5 −3.2 −1.9 386 43.3 −1.6 −1.9 −1.2
IMD 4 343 86.1 −4.4 −5.0 −3.7 331 43.1 −1.5 −1.8 −1.1
IMD 5 (least deprived) 288 84.8 −3.4 −4.1 −2.7 274 42.8 −1.7 −2.1 −1.4
Rural/urban Mainly rural 204 87.6 −3.0 −3.8 −2.2 <0.0001 219 43.7 −2.4 −2.8 −1.9 <0.0001
Largely rural 311 88.2 −3.2 −3.9 −2.5 310 43.3 −0.6 −0.9 −0.2
Urban with significant rural 170 88.3 −3.7 −4.7 −2.7 179 42.2 −0.9 −1.4 −0.4
Urban with city and town 379 85.9 −4.7 −5.3 −4.0 301 43.2 −2.2 −2.5 −1.9
Urban with major and conurbation 470 85.5 −1.7 −2.2 −1.2 493 43.3 −1.8 −2.1 −1.6
BMI grouping Healthy 182 65.9 −1.7 −2.2 −1.2 0.0007 180 43.1 −1.9 −2.2 −1.5 0.4325
Obese 777 98.3 −3.6 −2.2 −1.2 752 43.4 −1.5 −1.8 −1.3
Overweight 575 77.7 −2.9 −2.2 −1.2 570 43.0 −1.6 −1.9 −1.4
Highest education No qualifications 177 85.1 −2.2 −3.2 −1.3 0.0773 176 43.4 −1.4 −1.9 −1.0 0.5798
School leaver 755 87.3 −3.1 −3.5 −2.6 757 43.3 −1.7 −1.9 −1.5
Degree level 602 86.5 −3.4 −3.9 −3.0 569 43.0 −1.6 −1.8 −1.3
Peer support No 1071 86.3 −2.5 −2.9 −2.2 <0.0001 1104 43.1 −1.4 −1.6 −1.2 <0.0001
Yes 463 87.8 −4.5 −5.1 −3.8 398 43.4 −2.2 −2.5 −1.9
Wearables provided No 1207 86.4 −2.5 −2.8 −2.2 <0.0001 1254 43.2 −1.6 −1.7 −1.4 0.4462
Yes 327 87.9 −5.4 −6.2 −4.6 248 43.2 −1.7 −2.2 −1.3
Telephone service No 540 88.2 −4.2 −4.8 −3.6 <0.0001 477 43.6 −1.9 −2.2 −1.7 0.0039
Yes 994 85.9 −2.5 −2.9 −2.2 1025 43.0 −1.4 −1.6 −1.3
Text service No 297 86.1 −2.6 −3.2 −1.9 0.0916 308 43.7 −2.3 −2.6 −2.0 <0.0001
Yes 1237 86.9 −3.3 −3.6 −2.9 1194 43.1 −1.4 −1.6 −1.2
Provider Provider 1 77 90.8 −2.7 −4.1 −1.3 <0.0001 79 44.1 −0.8 −1.5 −0.1 <0.0001
Provider 2 297 86.1 −2.6 −3.2 −1.9 308 43.7 −2.3 −2.6 −2.0
Provider 3 213 88.7 −2.4 −3.1 −1.6 229 44.0 −2.2 −2.5 −1.8
Provider 4 250 87.0 −6.2 −7.1 −5.4 169 42.8 −2.2 −2.7 −1.6
Provider 5 697 85.9 −2.5 −2.9 −2.1 717 42.8 −1.1 −1.3 −0.8
Location Location 1 160 84.3 −5.7 −6.8 −4.6 <0.0001 89 43.2 −2.4 −3.1 −1.6 <0.0001
Location 2 157 90.0 −3.3 −4.3 −2.2 162 41.4 −0.6 −1.1 −0.1
Location 3 185 81.0 −0.9 −1.5 −0.2 183 42.0 −1.3 −1.8 −0.8
Location 4 109 89.5 −3.8 −4.9 −2.6 108 43.5 −2.7 −3.3 −2.2
Location 5 142 84.7 −3.0 −4.0 −2.0 141 43.5 −2.5 −2.8 −2.1
Location 6 138 89.1 −2.2 −3.2 −1.2 153 44.2 −2.0 −2.4 −1.5
Location 7 432 87.3 −3.0 −3.5 −2.4 451 43.8 −1.1 −1.4 −0.8
Location 8 155 87.3 −2.2 −3.0 −1.3 167 43.8 −2.2 −2.6 −1.8
Location 9 56 90.9 −7.8 −9.8 −5.8 48 41.2 −1.1 −2.2 −0.1

*Analysis of variance.

BMI, body mass index; HbA1c, glycated hemoglobin; IMD, Index of Multiple Deprivation.