Background
Methods
Data collection
Leisure-time physical activity
Milk/milk products consumption
Sleep
Potential confounders
Statistical analysis
Results
Description of the study participants
All (n = 421) | Non-DIS (n = 286) | DIS (n = 135) | |
---|---|---|---|
Mean ± SD | Mean ± SD | Mean ± SD | |
Age, years | 74.9 ± 5.5 | 74.7 ± 5.5 | 75.3 ± 5.6 |
Women, n (%) | 237 (56.3) | 149 (52.1) | 88 (65.2)* |
Height, cm | 155.2 ± 9.0 | 156.0 ± 8.6 | 153.6 ± 9.5* |
Weight, kg | 56.1 ± 9.6 | 56.9 ± 9.7 | 54.4 ± 9.3* |
Body mass index, kg/m2
| 23.2 ± 2.9 | 23.3 ± 2.9 | 23.0 ± 2.8 |
Total sleep time, min | 405.9 ± 73.4 | 411.6 ± 70.8 | 393.7 ± 77.3* |
Sleep latency, min | 21.1 ± 21.5 | 10.7 ± 5.5 | 43.2 ± 25.8* |
Hypnotic use, n (%) | 80 (19.0) | 34 (11.9) | 46* |
Leisure-time physical activity, points | 21.7 ± 25.1 | 23.7 ± 26.9 | 17.6 ± 20.5* |
Milk consumption
| |||
Frequency, days/week | 3.6 ± 2.9 | 3.8 ± 3.0 | 3.2 ± 2.9 |
Volume, ml/day | 155.9 ± 127.1 | 162.9 ± 129.4 | 141.0 ± 121.1 |
Total consumption, ml/week | 784.3 ± 813.4 | 819.0 ± 833.1 | 710.9 ± 767.7 |
Yogurt consumption
| |||
Frequency, days/week | 4.0 ± 2.8 | 3.9 ± 2.9 | 4.1 ± 2.8 |
Volume, g/day | 104.6 ± 79.0 | 100.6 ± 72.2 | 113.4 ± 91.9 |
Total consumption, g/week | 506.6 ± 491.4 | 469.9 ± 418.7 | 587.1 ± 616.0* |
Cheese consumption
| |||
Frequency, days/week | 1.3 ± 1.8 | 1.3 ± 1.8 | 1.3 ± 2.0 |
Volume, g/day | 14.3 ± 16.6 | 15.6 ± 17.3 | 11.5 ± 14.8* |
Total consumption, g/week | 35.6 ± 55.3 | 37.4 ± 56.6 | 31.9 ± 52.6 |
Total dairy consumption
| |||
Frequency, days/week | 5.4 ± 2.4 | 5.4 ± 2.4 | 5.3 ± 2.3 |
Volume, g/day | 193.9 ± 149.4 | 194.2 ± 145.0 | 193.5 ± 159.0 |
Total consumption, g/week | 1357.5 ± 1045.9 | 1359.1 ± 1015.0 | 1354.3 ± 1112.9 |
LTPA and DIS
DIS | |||
---|---|---|---|
n(%) | Odds ratio | 95% CI | |
Leisure-time physical activity
| Trend P value = 0.076 | ||
Not engaging | 57 (14.4) | 1.00 | |
Low level (0.1–16.9 points) | 168 (42.3) | 0.72 | 0.38–1.37 |
High level (≥17.0 points) | 172 (43.3) |
0.48
|
0.25–0.93
|
Milk/milk products and DIS
DIS | ||||
---|---|---|---|---|
n(%) | Odds ratio | 95% CI | ||
Milk consumption
|
Trend
P
value = 0.041
| |||
Not consuming | 105 (26.4) | 1.00 | ||
Low level (0–1049 ml/w) | 149 (37.5) | 0.66 | 0.37–1.18 | |
High level (≥1050 ml/w) | 143 (36.0) |
0.47
|
0.26–0.84
| |
Yogurt consumption
| Trend P value = 0.554 | |||
Not consuming | 72 (18.1) | 1.00 | ||
Low level (0–599 g/w) | 164 (41.3) | 0.98 | 0.51–1.87 | |
High level (≥600 g/w) | 161 (40.6) | 1.27 | 0.66–2.45 | |
Cheese consumption
| Trend P value = 0.089 | |||
Not consuming | 179 (45.1) | 1.00 | ||
Low level (0–49 g/w) | 115 (29.0) | 0.58 | 0.33–1.01 | |
High level (≥50 g/w) | 103 (25.9) | 0.61 | 0.34–1.08 | |
Total dairy consumption
| Trend P value = 0.242 | |||
Low level (0–805 g/w) | 133 (33.5) | 1.00 | ||
Moderate level (806–1605 g/w) | 132 (33.2) | 1.22 | 0.71 | 2.10 |
High level (≥1606 g/w) | 132 (33.2) | 1.22 | 0.43 | 1.34 |
LTPA with milk/milk products and DIS
DIS | |||||
---|---|---|---|---|---|
n(%) | Odds ratio | 95% CI | |||
LTPA
|
Milk
| ||||
Not engaging | × | Not consuming | 19 (4.8) | 1.00 | |
Not engaging | × | Consuming | 38 (9.6) | 0.42 | 0.13–1.37 |
Engaging | × | Not consuming | 86 (21.7) | 0.45 | 0.16–1.30 |
Engaging | × | Consuming | 254 (64.0) |
0.27
|
0.10–0.73
|
LTPA
|
Yogurt
| ||||
Not engaging | × | Not consuming | 14 (3.5) | 1.00 | |
Not engaging | × | Consuming | 43 (10.8) | 1.08 | 0.30–3.96 |
Engaging | × | Not consuming | 58 (14.6) | 0.57 | 0.16–2.06 |
Engaging | × | Consuming | 282 (71.0) | 0.64 | 0.20–2.03 |
LTPA
|
Cheese
| ||||
Not engaging | × | Not consuming | 26 (6.5) | 1.00 | |
Not engaging | × | Consuming | 31 (7.8) | 0.66 | 0.21–2.09 |
Engaging | × | Not consuming | 153 (38.5) | 0.59 | 0.24–1.45 |
Engaging | × | Consuming | 187 (47.1) |
0.34
|
0.14–0.85
|
LTPA
|
Total dairy
| ||||
Not engaging | × | Low level (0–12933 g/w) | 32 (8.1) | 1.00 | |
Not engaging | × | High level (≥12934 g/w) | 25 (6.3) | 1.90 | 0.62–5.82 |
Engaging | × | Low level (0–12933 g/w) | 167 (42.1) | 0.83 | 0.36–1.91 |
Engaging | × | High level (≥12934 g/w) | 173 (43.6) | 0.77 | 0.33–1.76 |