Table 1

Optical densities of PCR products from amplification reactions for H pylori ureC and cagA genes using as template DNA extracted from stomach, trachea, and lung from cases of SIDS and controls

Case no. Age at
death (wk)
Cause of deathH pylori ureC geneH pylori cagA gene
StomachTracheaLungStomachTracheaLung
T12SIDS0.2650.310* NT0.444* 0.363* NT
T23SIDS0.474* 0.340* 0.1630.0990.1070.107
T34SIDS0.297NT0.575* 0.404NT0.434*
T44SIDSNT0.302* 0.278NT0.2220.239
T55SIDS0.355* 0.2780.321* 0.537* 0.427* 0.477*
T66SIDS0.2680.1250.2130.3680.1090.429*
T77SIDS0.1320.374* 0.1630.4100.2470.369*
T87SIDS0.1240.1120.1130.0880.0990.120
T98SIDS0.2360.240NT0.583* 0.294* NT
T108SIDS1.020* 0.483* 1.040* 0.497* 0.417* 0.496*
T118SIDS0.2700.336* 0.406* 0.3650.369* 0.280
T128SIDS0.406* 0.2700.310* 0.570* 0.576* 0.375*
T138SIDS2.231* 2.918* 0.2490.1170.360* 0.102
T149SIDS0.470* 0.417* 0.500* 0.541* 0.431* 0.525*
T1510SIDS0.282NT0.1370.104NT0.096
T1610SIDS0.319* 0.2430.2600.1810.2600.255
T1711SIDS1.040* 0.500* 0.464* 0.496* 0.496* 0.488*
T1812SIDS0.317* 0.299* 0.2200.506* 0.378* 0.364*
T1912SIDS0.1790.1470.1300.1060.1020.102
T2013SIDS0.2862.570* 2.827* 0.709* 1.922* 0.389*
T2114SIDS0.1270.1550.1900.1050.1130.097
T2215SIDS0.336* 0.2480.2200.3330.442* 0.352*
T2316SIDSNT0.2400.373* NT0.364* 0.348*
T2416SIDS0.358* 0.295* 0.437* 0.3060.304* 0.852*
T2516SIDS0.490* 0.516* 0.485* 0.484* 0.2860.441*
T2619SIDS0.2850.2090.2250.426* 0.472* 0.386*
T2719SIDS0.2670.302* 0.390* 0.2870.2530.379*
T2821SIDS0.375* 0.310* 0.331* 0.4010.431* 0.436*
T2924SIDS0.375* 0.331* 0.2480.3320.433* 0.338*
T3024SIDS0.2330.319* 0.406* 0.435* 0.518* 0.652*
T3128SIDS0.2920.293* 0.327* 0.420* 0.504* 0.432*
T3228SIDS0.304* 0.307* 0.321* 0.3330.331* 0.263
C13Prematurity0.1000.1500.1800.1200.1300.090
C24PrematurityNT0.2000.090NT0.1200.100
C37Ileal perforation0.2650.298* 0.2830.414* 0.303* 0.317
C47Necrotising enterocolitis0.2000.1500.1800.1200.2000.150
C520 E colisepticaemia0.1700.1600.1770.1500.1200.160
C624Suffocation0.2100.080NT0.1500.090NT
C732PneumoniaNT0.1300.180NT0.1500.180
C844Pneumococcal septicaemia0.1000.140NT0.1200.090NT
Mean (SD)0.1740.1630.1810.1790.1500.166
(0.065)(0.063)(0.060)(0.116)(0.071)(0.080)
  • Those specimens with a cut off value greater than or equal to the mean plus two times the standard deviation of the negative controls are marked with an asterisk.

  • SIDS, sudden infant death syndrome; T1, test case number 1; C1, control case number 1; NT, not tested.