Table 4 Injury rate and rate ratios by age, position of play and BMI
N | Percent (95 % CI) | IIRMHE (95 % CI) | RRMHE (95 % CI) | |
|---|---|---|---|---|
Age | ||||
18–24 | 89 | 69 (61–77) | 52.6 (42.2–64.7) | ref. |
25–34 | 36 | 27.9 (20.2–35.6) | 51.8 (36.3–71.7) | 0.99 (0.67–1.45) |
≥35 | 4 | 3.1 (0.1–6.1) | 51.4 (14.0–131.6) | 0.98 (0.37–2.56) |
Year of participation | ||||
≤10 years | 79 | 61.2 (52.8–69.6) | 52.8 (41.8–65.8) | ref. |
>10 years | 50 | 38.8 (30.4–47.2) | 51.6 (38.3–68.0) | 0.69–1.39 |
Position | ||||
Forward | 67 | 51.9 (43.3–60.6) | 52.2 (40.5–66.3) | ref. |
Backs | 62 | 48.1 (39.4–56.7) | 52.4 (40.2–67.2) | 1.00 (0.71–1.42) |
BMI | ||||
<25 | 48 | 39.3 (30.7–48) | 58.7 (43.3–77.9) | ref. |
25 to 30 | 58 | 47.5 (38.7–56.4) | 50.4 (38.3–65.1) | 0.86 (0.59–1.25) |
>30 | 16 | 13.1 (7.1–19.1) | 40.0 (22.8–64.9) | 0.68 (0.39–1.19) |
SF-36v2 PCS | ||||
NBS <47 | 56 | 43.4 (34.9–52) | 54.7 (41.3–71.1) | 1.05 (0.70–1.58) |
NBS 47–53 | 40 | 31 (23–39) | 51.9 (37.1–70.7) | ref. |
NBS >53 | 33 | 25.6 (18.1–33.1) | 49.1 (33.8–69.0) | 0.95 (0.60–1.49) |
SF-36v2 MCS | ||||
NBS <47 | 38 | 29.5 (21.6–37.3) | 53.7 (38.0–73.7) | 0.93 (0.57–1.50) |
NBS 47–53 | 28 | 21.7 (14.6–28.8) | 57.9 (38.5–83.7) | ref. |
NBS >53 | 63 | 48.8 (40.2–57.5) | 49.5 (38.0–63.3) | 0.85 (0.55–1.33) |