Table 2.
The Tromsø Staph and Skin Study. Characteristics of smoking men and women by tertiles of serum 25(OH)D
| Characteristic | Single swab culture | |||||||
|---|---|---|---|---|---|---|---|---|
| Serum 25(OH)D (nmol/l) | ||||||||
| Men (n = 323a) | Women (n = 460a) | |||||||
| Tertile 1 | Tertile 2 | Tertile 3 | P b | Tertile 1 | Tertile 2 | Tertile 3 | P b | |
| 59.6 (n = 115) | 59.6–75.3 (n = 122) | 75.3 (n = 86) | <59.6 (n =143) | 59.6–75.3 (n = 140) | >75.3 (n = 177) | |||
| Age (years) | 51.1 (12.3) | 51.9 (11.5) | 53.0 (10.9) | 0.35 | 52.1 (12.4) | 53.4 (10.8) | 52.1 (10.6) | 0.40 |
| BMI (kg/m2 ) | 26.7 (4.3) | 26.8 (3.5) | 26.9 (4.3) | 0.99 | 27.0 (5.3) | 25.6 (4.5) | 24.7 (3.6) | 0.001 |
| No. of cigarettes/day | 12.8 (9.6) | 13.0 (6.6) | 13.6 (6.0) | 0.07 | 9.4 (6.9) | 10.9 (4.7) | 11.1 (5.2) | 0.001 |
| No. of years smoked | 30.4 (12.8) | 32.9 (11.5) | 33.9 (11.7) | 0.06 | 28.8 (11.1) | 31.7 (10.2) | 32.8 (9.8) | 0.004 |
| Characteristic | Repeated swab culture | |||||||
|---|---|---|---|---|---|---|---|---|
| Serum 25(OH)D (nmol/l) | ||||||||
| Men (n = 233a) | Women (n = 316a) | |||||||
| Tertile 1 | Tertile 2 | Tertile 3 | P b | Tertile 1 | Tertile 2 | Tertile 3 | P b | |
| <59.6 (n = 82) | 59.6–75.3 (n = 88) | >75.3 (n = 63) | <59.6 (n = 97) | 59.6–75.3 (n = 98) | >75.3 (n = 121) | |||
| Age (years) | 50.8 (12.1) | 53.1 (11.3) | 54.0 (11.4) | 0.12 | 52.2 (11.9) | 53.7 (11.3) | 53.2 (10.2) | 0.47 |
| BMI (kg/m2 ) | 27.2 (4.5) | 26.9 (3.3) | 26.6 (3.8) | 0.55 | 27.5 (5.6) | 25.4 (4.2) | 24.6 (3.6) | 0.001 |
| No. of cigarettes/day | 12.7 (10.2) | 13.0 (7.0) | 12.7 (5.2) | 0.22 | 9.2 (7.0) | 10.6 (4.6) | 11.5 (5.7) | <0.001 |
| No. of years smoked | 30.3 (12.1) | 33.6 (11.6) | 34.6 (12.1) | 0.06 | 28.7 (11.2) | 32.0 (10.3) | 33.7 (9.6) | 0.002 |
SD standard deviation, BMI body mass index
Values are given as means (SD) and numbers (%)
aNumbers may vary due to missing information
bAnova and Kruskal-Wallis test for continuous variables. Pearson chi-square test for categorical variables