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Table 1 Demographic status of studied Qatari population

From: Profiling the Salivary microbiome of the Qatari population

Category Male Female Total
Gender 442 555 997
Agea 38.3 ± 11.9 39.3 ± 12.1 38.2 ± 12.0
Age group
 Adults (18 ≥ age ≤ 65) 434 (98.2%) 545 (98.2%) 979 (98.2%)
 Elderly (age > 65) 8 (1.8%) 10 (1.8%) 18 (1.8%)
Oral health status
 Bleeding gum
  No 398 (90.0%) 515 (92.8%) 913 (91.6%)
  Yes 44 (10%) 40 (7.20%) 84 (8.4%)
 Mouth ulcer
  No 419 (94.8%) 541 (97.5%) 960 (96.3%)
  Yes 23 (5.2%) 14 (2.5%) 37 (3.7%)
 Painful gum
  No 400 (90.5%) 516 (93.0%) 916 (91.9%)
  Yes 42 (9.5%) 39 (7.0%) 81 (8.1%)
 Loose teeth
  No 422 (95.5%) 537 (96.8%) 959 (96.2%)
  Yes 20 (4.5%) 18 (3.2%) 38 (3.8%)
 Denture
  No 387 (87.6%) 474 (85.4%) 861 (86.4%)
  Yes 55 (12.4%) 81 (14.6%) 136 (13.6%)
Smoking status
 Non-smokers 210 (47.5%) 523 (94.2%) 733 (73.5%)
 Smokers 232 (52.5%) 32 (5.8%) 264 (26.5%)
Coffee drinking
 Coffee 418 (94.6%) 469 (84.5%) 887 (89.0%)
 No coffee 24 (5.4%) 86 (15.5%) 110 (11.0%)
Tea drinking
 Tea 363 (82.1%) 405 (73.0%) 768 (77.0%)
 No tea 79 (17.9%) 150 (27.0%) 229 (23.0%)
  1. aAge: (years, mean ± standard deviation)