Table 1. Characteristics of study population by sitting and moderate- to vigorous-intensity physical activity in postmenopausal women not using menopausal hormone therapy, stratified by menopausal hormone therapy use: the Women’s Health Initiative Observational Study.
|
Postmenopausal women not using menopausal hormone therapy (N=936, weighted
N=30 405) | |||||||
|---|---|---|---|---|---|---|---|
|
Sitting (h per day) |
Moderate- to vigorous-intensity physical activity (MET-h per week) |
||||||
| ⩽5 | 6–9 | ⩾10 | 0 | 0.1–7.4 | 7.5–14.9 | ⩾15 | |
| Characteristic | N (weighted %a) | N (weighted %a) | |||||
|
Age at baseline blood draw (years) | |||||||
| <55 | 17 (4.6) | 36 (7.2) | 27 (16.9) | 15 (4.3) | 12 (8.7) | 20 (8.6) | 33 (10.5) |
| 55–59 | 57 (13.3) | 63 (17.9) | 55 (23.4) | 48 (22.9) | 42 (18.4) | 25 (11.5) | 60 (17.8) |
| 60–64 | 71 (18.6) | 94 (22.5) | 56 (21.2) | 52 (21.9) | 51 (21.6) | 52 (20.7) | 66 (19.5) |
| 65–69 | 71 (23.6) | 92 (27.3) | 34 (15.9) | 37 (21.8) | 52 (25.5) | 51 (23.0) | 57 (23.1) |
| 70–74 | 73 (28.0) | 66 (15.4) | 29 (11.9) | 32 (21.4) | 42 (18.5) | 41 (18.4) | 53 (19.4) |
| 75–79 | 35 (12.0) | 38 (9.7) | 22 (10.8) | 17 (7.7) | 16 (7.3) | 31 (17.8) | 31 (9.8) |
|
Race | |||||||
| White | 283 (89.1) | 342 (88.0) | 200 (91.9) | 164 (84.2) | 181 (84.7) | 200 (91.1) | 280 (94.0) |
|
Year at blood draw | |||||||
| 1993–1996 | 188 (53.6) | 244 (67.3) | 139 (64.6) | 117 (57.0) | 131 (62.4) | 133 (58.4) | 190 (66.1) |
| 1997–1998 | 136 (46.4) | 145 (32.7) | 84 (35.4) | 84 (43.0) | 84 (37.6) | 87 (41.6) | 110 (33.9) |
|
Smoking status | |||||||
| Never | 174 (56.0) | 190 (48.5) | 110 (43.5) | 92 (46.5) | 111 (52.2) | 117 (50.9) | 154 (50.6) |
| Former | 126 (35.7) | 172 (42.4) | 97 (48.0) | 92 (42.9) | 83 (38.3) | 87 (38.8) | 133 (43.7) |
| Current | 24 (8.3) | 27 (9.1) | 16 (8.5) | 17 (10.6) | 21 (9.5) | 16 (10.3) | 13 (5.7) |
|
Time since menopause | |||||||
| <10 years | 96 (27.7) | 117 (27.3) | 83 (39.0) | 63 (29.4) | 62 (29.3) | 61 (26.8) | 110 (33.4) |
| 10–20 years | 119 (33.5) | 151 (41.2) | 84 (34.0) | 83 (41.9) | 82 (34.7) | 92 (38.2) | 97 (33.8) |
| ⩾20 years | 100 (35.4) | 104 (27.4) | 42 (20.7) | 44 (23.5) | 66 (33.5) | 57 (30.5) | 79 (27.9) |
| Missing | 9 (3.5) | 17 (4.1) | 14 (6.3) | 11 (5.2) | 5 (2.4) | 10 (4.5) | 14 (4.9) |
|
BMI at baseline (kg m−2) | |||||||
| <25 | 130 (45.9) | 141 (39.5) | 70 (47.8) | 38 (25.8) | 72 (41.9) | 78 (39.9) | 136 (54.5) |
| 25–30 | 116 (37.3) | 114 (29.3) | 60 (22.3) | 59 (27.9) | 67 (30.3) | 89 (35.2) | 90 (27.2) |
| ⩾30 | 78 (16.8) | 134 (31.2) | 93 (29.9) | 104 (46.3) | 76 (27.8) | 53 (24.9) | 74 (18.4) |
|
Postmenopausal women currently using menopausal hormone therapy (N=868, weighted
N=24 851) | |||||||
| Sitting (h per day) | Moderate- to vigorous-intensity physical activity (MET-h per week) | ||||||
| ⩽5 | 6–9 | ⩾10 | 0 | 0.1–7.4 | 7.5–14.9 | ⩾15 | |
| Characteristic |
N
(weighted %a) |
N
(weighted %a) |
|||||
|
Age at baseline blood draw (years) | |||||||
| <55 | 26 (11.0) | 33 (15.5) | 40 (26.5) | 16 (14.0) | 17 (29.5) | 11 (6.6) | 45 (22.2) |
| 55–59 | 53 (24.9) | 75 (23.1) | 65 (30.9) | 36 (27.6) | 43 (24.8) | 46 (33.2) | 68 (21.7) |
| 60–64 | 77 (26.4) | 88 (23.1) | 49 (21.5) | 37 (27.1) | 58 (24.5) | 44 (23.2) | 75 (21.7) |
| 65–69 | 72 (21.7) | 71 (21.0) | 33 (9.6) | 19 (14.2) | 38 (15.0) | 50 (21.0) | 69 (21.2) |
| 70–74 | 53 (11.7) | 56 (11.8) | 25 (9.8) | 29 (13.1) | 32 (12.3) | 29 (12.1) | 44 (8.9) |
| 75–79 | 21 (4.2) | 25 (5.5) | 6 (1.8) | 8 (4.1) | 14 (4.0) | 14 (3.9) | 16 (4.2) |
|
Race | |||||||
| White | 282 (90.5) | 325 (93.4) | 208 (96.8) | 134 (93.0) | 199 (94.3) | 182 (91.9) | 300 (93.6) |
|
Year at blood draw | |||||||
| 1993–1996 | 174 (57.5) | 219 (63.9) | 145 (65.9) | 90 (56.1) | 126 (61.3) | 117 (54.8) | 205 (70.5) |
| 1997–1998 | 128 (42.5) | 129 (36.1) | 73 (34.1) | 55 (43.9) | 86 (38.7) | 77 (45.2) | 112 (29.5) |
|
Smoking status | |||||||
| Never | 153 (45.0) | 176 (45.9) | 92 (47.8) | 72 (47.2) | 109 (50.4) | 99 (55.3) | 141 (37.4) |
| Former | 137 (48.3) | 159 (50.7) | 116 (45.2) | 62 (40.7) | 95 (44.3) | 89 (40.8) | 166 (59.9) |
| Current | 12 (6.6) | 13 (3.4) | 10 (6.9) | 11 (12.1) | 8 (5.3) | 6 (3.9) | 10 (2.8) |
|
Time since menopause (years) | |||||||
| <10 | 98 (40.5) | 132 (38.1) | 115 (58.5) | 54 (38.8) | 84 (48.0) | 62 (36.3) | 145 (48.9) |
| 10–20 | 127 (35.9) | 133 (39.8) | 66 (25.9) | 48 (32.1) | 78 (31.4) | 84 (44.9) | 116 (33.4) |
| ⩾20 | 77 (23.6) | 83 (22.1) | 37 (15.6) | 43 (29.1) | 50 (20.5) | 48 (18.8) | 56 (17.8) |
|
BMI at baseline (kg m−2) | |||||||
| <25 | 166 (49.3) | 177 (50.8) | 98 (33.5) | 45 (35.3) | 63 (29.4) | 93 (41.2) | 206 (62.7) |
| 25–30 | 91 (32.3) | 96 (27.7) | 68 (36.4) | 47 (28.1) | 92 (44.7) | 69 (35.4) | 74 (25.4) |
| ⩾30 | 45 (18.1) | 75 (21.5) | 52 (30.2) | 53 (36.6) | 57 (25.9) | 32 (23.4) | 37 (11.8) |
Abbreviations: BMI=body mass index; MET=metabolic equivalent of task.
a
Percentages reflect weighted counts and refer to the study cohort.