Table 4.
Within and between group differences for all secondary outcomes
| Outcome |
Within group differences |
Within group differences | Between group differences | |||||
| Week 0 | Week 12 | week 12 minus Week 0 | Week 0 | Week 12 | week 12 minus Week 0 | Week 12 SUMIT minus control | ||
| SUMIT Mean (SD) n=17 |
SUMIT Mean (SD) n=17 |
SUMIT MD (SD) n=17 |
Control Mean (SD) n=13 |
Control Mean (SD) n=13 |
Control MD (SD) n=13 |
MD (95% CI), P value | Previously published MDC values | |
| Steps per day | 7209 (3159) | 7213 (2681) | 4 (1308) | 7484 (2903)* | 7676 (2773)* | 192 (1627)* | 247 (−1264 to 769), 0.62 | N/A |
| Daily stepping time | 92 (37) | 92 (32) | 0.6 (16) | 98 (37)* | 103 (40)* | 5 (18)* | 7 (−19 to 6), 0.30 | N/A |
| Daily time with cadence >100 spm | 7 (9) | 15 (12) | 8 (9) | 7 (9)* | 10 (10)* | 3 (14)* | 5 (−0.4 to 11), 0.67 | N/A |
| Daily time with bouts >1 min | 23 (19) | 52 (20) | 29 (13) | 23 (19)* | 44 (29)* | 21 (24)* | 8 (−6 to 21), 0.27 | N/A |
| IPAQ bike | 21 (42)* | 8 (30)* | 13 (55)* | 9 (33) | 0 (0) | 9 (33) | 8 (−9 to 26), 0.35 | N/A |
| IPAQ walk | 299 (507)* | 187 (224)* | 112 (556)* | 205 (387) | 171 (370) | 34 (72) | 11 (−220 to 197), 0.91 | N/A |
| IPAQ gardening (vig) | 84 (178)* | 41 (95)* | 43 (196)* | 92 (198) | 83 (96) | 9 (198) | 41 (−115 to 32), 0.26 | N/A |
| IPAQ gardening (mod) | 252 (429)* | 61 (83)* | 191 (398)* | 156 (253) | 157 (186) | 1 (328) | 101 (−209 to 7), 0.07 | N/A |
| IPAQ housework | 215 (359)* | 217 (318)* | 2 (144)* | 353 (301) | 167 (225) | 187 (368) | 123 (−50 to 297), 0.16 | N/A |
| IPAQ leisure walking | 94 (140)* | 157 (236)* | 63(245)* | 142 (210) | 183 (91) | 41 (183) | 12 (−154 to 130), 0.89 | N/A |
| IPAQ leisure (vig) | 37 (52)* | 27 (72)* | 10 (47)* | 39 (81) | 5 (17) | 35 (73) | 23 (−14 to 59), 0.21 | N/A |
| IPAQ leisure (mod) | 15 (30)* | 52 (76)* | 37 (75)* | 51 (98) | 59 (78) | 8 (110) | 2 (−59 to 62), 0.96 | N/A |
| 6MWD, m | 484 (114)* | 503 (102)* | 19 (53)* | 525 (97) | 527 (106) | 2 (40) | 11 (−25 to 48), 0.52 | 75 m (44) |
| KOOS pain | 67 (16)* | 79 (15)* | 12 (13)*† | 74 (14) | 76 (14) | 2 (13) | 8 (−3 to 18), 0.14† | 8–10 points (43) |
| KOOS symptoms | 65 (12)* | 74 (13)* | 9 (11)* | 74 (11) | 77 (14) | 2 (16) | 2 (−9 to 13), 0.73 | 8–10 points (43) |
| KOOS function | 70 (19)* | 83 (12)* | 14 (15)* | 78 (12) | 81 (15) | 3 (12) | 7 (−3 to 16), 0.16 | 8–10 points (43) |
| KOOS sport and recreation | 37 (19)* | 52 (21)* | 14 (21)* | 45 (29) | 58 (29) | 14 (28) | 2 (−20 to 16), 0.81 | 8–10 points (43) |
| KOOS QoL | 47 (20)* | 60 (20)* | 13 (11)*† | 54 (18) | 55 (20) | 1 (17) | 10 (−2 to 22), 0.09† | 8–10 points (43) |
| EQ5D | 0.69 (0.22)* | 0.79 (0.12)* | 0.10 (0.23)*† | 0.77 (0.10 | 0.74 (0.11) | 0.03 (0.13) | 0.07 (−0.03 to 0.16), 0.15 | 0.07 (40) |
| Body mass index, kg/m2 | 33 (7)* | 33 (6)* | 0.0 (0.8)* | 28 (6) | 28 (6) | 0.1 (0.4) | 0.3 (−0.2 to 0.8), 0.23 | N/A |
| Systolic blood pressure, mm Hg | 138 (15)* | 131 (11)* | 7 (12) | 135 (10) | 132 (15) | 3 (14) | 3 (−11 to 6), 0.56 | N/A |
| Waist circumference, cm | 106 (14)* | 106 (14)* | 0.3 (5.2)* | 95 (13) | 98 (13) | 2.5 (4.8) | 1.4 (−5.6 to 2.7), 0.47 | N/A |
| 30 s chair stand test | 12 (2)* | 12 (3)* | 1 (1)* | 12 (2) | 12 (2) | 0 (2) | 0.5 (−0.8 to 1.7), 0.44 | 2 stands (45) |
| Walking speed, m/s | 1.5 (0.3)* | 1.7 (0.4)* | 0.1 (0.2) | 1.7 (0.5) | 1.7 (0.4) | 0.1 (0.2) | 0.15 (−0.01 to 0.31), 0.06 | 0.19 m/s (45) |
Bold denotes CIs which include the defined minimal detectable change.
†Mean difference achieved a minimal detectable change.
*Mean difference achieved a minimal detectable change
EQ5D, Euro QoL 5-Dimension; IPAQ, International Physical Activity Questionnaire; KOOS, Knee Osteoarthritis Outcome Score; MD, mean difference; MDC, minimal detectable change; 6MWD, 6-minute min walk distance; N/A, not applicable; QOL, quality of life; SUMIT, SUpported Motivational InTerviewing; vig, vigorous.