Frequency distributions of ATV riding were calculated for riders overall and by gender, geographic region and MSA status. Frequency distributions of helmet use were calculated for riders overall and by gender, MSA status and riding frequency. The standard four US Census regions west, south, northeast and midwest were used. All analyses were conducted using SAS V. 9. 3 SAS Institute Inc, Cary, North Carolina, USA. Standard Wald CIs for proportions were produced using the ‘surveyfreq’ procedure. Differences between proportions were considered statistically significant if the 95% CIs did not overlap. A total of the 833 YouthStyles respondents provided information about ATV riding. After sampling weights were applied, the data set contained 831 observations. Table 1 presents both unweighted and weighted sample sizes and weighted percent distributions by gender, region and MSA status for all of the survey respondents.
4 * TIRE SET ATV TIRES 25" 25x8x12 25x10x12 with warranty 6ply front Steel ATV Snow Plow Adjustable 48" Blade Complete Universal Kit PackageNEW BAJA DG Performance Yamaha Grizzly 660 Series Full Chassis Skid Plate (2) New 25x8-12 & (2) New 25x10-12 Grizzly 6-Ply ATV UTV Tire Set FOUR New Tires4pcs 2" Thick ATV 4x110 4/110 Wheel Spacers 10x1.25 Studs & Tapered Lug NutsPowermall YTX14AH-BS ATV Battery AGM Rechargeable YTX14AH For kawasaki polarisNew Carburetor Carb For Yamaha Big Bear Wolverine Kodiak Grizzly 350 400 4501998-2001 Yamaha Grizzly 600 YFM600 CDI Igniter module Ignition NEWYB12A-A YB12C-A 12V GEL Battery for Yamaha Warrior Wolverine 350 Grizzly 1254SH-24260-11-00 GENUINE YAMAHA FUEL LEVEL GAUGE METER KODIAK BIG BEAR GRIZZLYAftermarket Carburetor For YAMAHA Grizzly 660 YFM660 2002-2008 NEW CarbNew Rear Left Right Brake Calipers 07-18 YAMAHA Grizzly 700 YFM700F/P With PadsWeize YTX14AH-BS High Performance Maintenance Free AGM Rechargeable ATV BatteryNEW YAMAHA FUEL PETCOCK GRIZZLY 400 450 KODIAK 400 450 5GH-24500-10-001998-2001 Yamaha Grizzly 600 YFM600 Carburetor Intake Manifolds Fuel Petcock NEWYAMAHA Big Bear 400 Grizzly 600 Kodiak 400 Fuel Gas Tank Gauge Meter Replacement4x 288W LED Work Lights Pods Spot Fog Offroad Lamp For ATV JEEP UTE SUV 4'' CubeWeize Battery YTX20L-BS Yamaha Big Bear Grizzly Kodiak YFM400 450 600 660 700Wheel Bearings for Yamaha Grizzly YFM 550 660 Front & Rear 03-18New VANACC KT ATV Four Wheeler Front Rear Tires (4)Set 2 25x10-12 and 2 25x8-12Carburetor Carb for Yamaha Bruin Big Bear Wolverine Kodiak Grizzly 350 400 450NEW ~ YAMAHA GRIZZLY 550 4X4 PRIMARY CLUTCH SHEAVE ASSEMBLY 2009 2010 2011 2012Tusk High Pressure Radiator Cap with Temperature Gauge 1.8 BarFit Yamaha Big Bear 400 Carburetor YFM 400 YFM400 2000-2006 2x4 4x4 Carb Perfect2008 Yamaha Grizzly 700 Eps Power Steering Motor 3b4-238b0-31-00Yamaha Grizzly 450 4X4 09 Full Fender Set Front Rear 13408Yamaha YFM80 Grizzly 80W Raptor FMF POWERCORE 4 S/A Complete Sys.GRIZZLY 550 12" VIPER BLACK ATV ALUMINUM WHEELS (SET 4) LIFETIME WARRANTY IRS1CA2008 Yamaha Grizzly YFM 700 Front Differential Final Drive 3b4-46160-12-00 GRIZZLY 700 12" COBRA M/B ATV ALUMINUM WHEELS (SET 4) LIFETIME WARRANTY IRS1CA