A novel approach to increasing community capacity for weight management a volunteer-delivered programme (ActWELL) initiated within breast screening clinics: a randomised controlled trial

Table 4 Changes in Body Weight and associated variables

	Intervention Group			Comparison group			Between group difference; P value
	N	Mean (SD)	95% CI	N	Mean (SD)	95% CI	Unadjusted mean (95% CI)	P value	Adjusted for all SAP variables (95% CI)	P value
Changes in anthropometric measures
Measured body weight (kg)
Baseline	278	80.9 (13.3)		281	81.9 (12.8)
12 months	226	77.8 (12.6)		240	80.2 (12.7)
Difference to baseline	225	−2.5 (4.4)	−3.1 to −1.9	240	−1.2 (5.0)	−1.8 to −0.6	−1.59 (−3.17 to − 0.01)	0.048	−1.29 (−2.15 to − 0.43)	0.003
Self-reported body weight (kg)
Baseline	267	79.4 (12.9)		272	80.4 (12.7)
12 weeks	253	78.0 (12.4)		228	79.9 (13.5)
Difference to baseline	245	−1.5 (3.3)	−1.9 to − 1.1	224	−0.7 (3.4)	− 1.2 to − 0.3
12 months	219	76.9 (12.7)		224	78.9 (12.7)
Difference to baseline	210	−2.1 (4.8)	−2.8 to −1.5	219	−0.9 (5.5)	−1.6 to − 0.1	−1.37 (− 2.97 to 0.23)	0.092	−1.23 (− 2.20 to − 0.25)	0.014
Mean waist circumference (cm)
Baseline	279	98.1 (12.5)		281	98.7 (11.7)
12 months	226	95.5 (11.7)		239	97.4 (12.0)
Difference to baseline	226	−2.3 (6.0)	−3.1 to −1.5	239	−1.0 (6.6)	−1.8 to −0.2	− 1.20 (− 2.67 to 0.28)	0.110	−1.24 (− 2.38 to − 0.10)	0.033
BMI (measured)^a
Baseline	279	31.0 (4.7)		281	31.3 (4.3)
12 months	226	29.9 (4.6)		240	30.6 (4.3)
Difference to baseline	226	−1.0 (1.6)	−1.2 to −0.7	240	−0.5 (1.9)	−0.7 to − 0.2	0.98 (0.97 to 0.10)	0.048	0.98 (0.97 to 0.99)	0.002
Percent weight loss at 12 months^b
≥ 5% n (%)	279	76 (27.2%)		281	46 (16.4%)		Odds ratio 2.15 (1.41 to 3.29)	< 0.001	Odds ratio 2.20 (1.41 to 3.43)	< 0.001

^alog transformed (data presented as back transformations) ^b logistic regression allowing for close co-linearity (binary variables)

ISSN: 1479-5868