Table 3

Sensitivity analysis: coefficients and p values for two separate analyses, periods 1 and 2 and periods 2 and 3

Periods 1 and 2Periods 2 and 3
CoefficientP valueCoefficientP value
Alcohol by volume (%) of beer
 Intercept4.8239 (4.7759 to 4.8718)0.0004.6997 (4.6773 to 4.7221)0.000
 First slope0.0005 (0.0005 to 0.0005)0.000−0.0001 (−0.0002 to −0.0001)0.000
 Event0.0486 (0.0328 to 0.0644)0.0000.1702 (0.1583 to 0.1820)0.000
 Second slope−0.0001 (−0.0003 to 0.0000)0.014−0.0011 (−0.0011 to −0.0010)0.000
 Affordability−0.0045 (−0.0050 to −0.0040)0.000−0.0028 (−0.0030 to −0.0026)0.000
Purchase grams of alcohol within beer
 Intercept10.5313 (8.3448 to 12.7178)0.00014.6872 (12.5802 to 16.7943)0.000
 First slope0.0076 (0.0058 to 0.0093)0.000−0.0056 (−0.0092 to −0.0020)0.002
 Event0.9975 (0.2772 to 1.7177)0.0075.8706 (4.7517 to 6.9894)0.000
 Second slope−0.0060 (−0.0110 to −0.0009)0.021−0.0347 (−0.0400 to −0.0294)0.000
 Affordability0.0855 (0.0637 to 0.1074)0.0000.0531 (0.0327 to 0.0736)0.000
Purchase grams of alcohol overall
 Intercept130.839 (119.141 to 142.537)0.000180.884 (173.432 to 188.336)0.000
 First slope0.0167 (0.0085 to 0.0250)0.000−0.0196 (−0.0302 to −0.0090)0.000
 Event2.1522 (−1.1968 to 5.5011)0.2088.8731 (5.6206 to 12.1256)0.000
 Second slope−0.0155 (−0.0392 to 0.0082)0.199−0.0661 (−0.0817 to −0.0505)0.000
 Affordability−0.2503 (−0.3695 to −0.1312)0.000−0.7393 (−0.8126 to −0.6660)0.000
  • For periods 1 and 2: first slope=slope 1; event=level 1; second slope=slope 2. For periods 2 and 3: first slope=slope 2; event=level 2; second slope=slope 3.