Histogram

PSG Quality Assessment (SHHS1): Signal Quality (chin) vs SHHS Visit Number
Visit 1 Visit 2 CVD Outcomes
Total 5,804 4,080 5,042
Signal free from artifact < 2 hours 496 - -
Signal free from artifact 2-4 hours 347 - -
Signal free from artifact 4-6 hours 1,153 - -
Signal free from artifact >= 6 hours 3,808 - -
Unknown - 4,080 5,042
PSG Quality Assessment (SHHS1): Signal Quality (chin) vs Age at SHHS1
Visit 1
39.0 to 55.0 years 55.0 to 63.0 years 63.0 to 72.0 years 72.0 to 100.0 years Total
Total 1,451 1,451 1,451 1,451 5,804
Signal free from artifact < 2 hours 114 118 110 154 496
Signal free from artifact 2-4 hours 103 88 73 83 347
Signal free from artifact 4-6 hours 273 284 324 272 1,153
Signal free from artifact >= 6 hours 961 961 944 942 3,808
PSG Quality Assessment (SHHS1): Signal Quality (chin) vs Gender
Visit 1
Female Male Total
Total 3,039 2,765 5,804
Signal free from artifact < 2 hours 238 258 496
Signal free from artifact 2-4 hours 159 188 347
Signal free from artifact 4-6 hours 568 585 1,153
Signal free from artifact >= 6 hours 2,074 1,734 3,808
PSG Quality Assessment (SHHS1): Signal Quality (chin) vs Gender
Visit 2
Female Male Total
Total 2,219 1,861 4,080
Signal free from artifact < 2 hours - - -
Signal free from artifact 2-4 hours - - -
Signal free from artifact 4-6 hours - - -
Signal free from artifact >= 6 hours - - -
Unknown 2,219 1,861 4,080
PSG Quality Assessment (SHHS1): Signal Quality (chin) vs Race
Visit 1
white black native amer/alaskan asian/pacific islander hispanic/mex. amer other Total
Total 4,907 515 11 88 280 3 5,804
Signal free from artifact < 2 hours 418 57 2 1 17 1 496
Signal free from artifact 2-4 hours 287 32 - 9 19 - 347
Signal free from artifact 4-6 hours 988 110 2 13 40 - 1,153
Signal free from artifact >= 6 hours 3,214 316 7 65 204 2 3,808
PSG Quality Assessment (SHHS1): Signal Quality (chin) vs Race
Visit 2
white black native amer/alaskan asian/pacific islander hispanic/mex. amer other Total
Total 3,587 256 8 48 180 1 4,080
Signal free from artifact < 2 hours - - - - - - -
Signal free from artifact 2-4 hours - - - - - - -
Signal free from artifact 4-6 hours - - - - - - -
Signal free from artifact >= 6 hours - - - - - - -
Unknown 3,587 256 8 48 180 1 4,080